A partial tactical reload does not require ejecting loaded rounds.
Open the cylinder. Press the ejector rod to the rear using thumb of left hand enough to lift all fired and unfired rounds part way out of the cylinder. The fired brass will be the closest ones to the center line of your body ( for a right-handed shooter ). Hook the right-hand fingernails of index finger and the one next to it under the empty brass rims. Flip both empties out simultaneously. Reload the two empty chambers with live rounds from belt loop or pocket with right hand.
Done properly, it's actually a fairly quick reload.
Full reloads done with my Safariland ( far superior to HKS-don't know why people use them at all ) I do with my left hand.
On my belts, I carry any speed loaders on the left front. A few cartridges in loops on the right front.
My method is unconventional, but is pretty fast if I practice a little once in a while. I stopped all centerfire practice a couple of years ago because of the ammo and component shortages and prices. I still have a pretty good supply of components I bought years ago before everything went crazy, but when I think about replacement costs, when, if ever primers and powder are available again it makes me not want to burn up what I have in stock. I know prices will never return to what they were 3+ years ago.
The days of 4 cent primers and 25 dollar per pound powder are gone forever. We still have some dark days and years ahead, and who can say components will be available at any price at some period in the future.
There are several potential issues with doing the partial tactical reload you describe.
1) It requires a great deal of fine motor skill, something you will have a lot less of under extreme stress, such as when receiving fire in a firefight;
2) pressing the ejector rod to partially eject the rounds is dependent on the cartridges not sticking in the chambers. That's fine with .38 Special but that often not the case with a full power .357 Mag self defense load. Almost as bad, you've now created a need for both a rapid full ejection of cases, and a soft partial ejection of cases and under extreme stress your brain has to accurately pick the right one, and then execute the soft partial ejection with seriously challenged fins motor skills.
3) If you are looking down at the cylinder to visually ID the fired cartridge your eyes are no longer on the fight and you've now become just a target.
4) add in some adrenaline, time pressure and a little shakiness and you run a real risk of one of those rounds getting bumped out of the ejector start and falling back into the chamber under the ejector star, which now leaves your revolver totally inoperable until you pick that cartridge or case back out of the chamber while holding the ejector rod in to keep the star above the cylinder. With a short barrel revolver and short ejector rod that task becomes even more difficult.
In contrast, with a moon clip:
1) the need for fine motor skill is kept to a minimum;
2) you can use the same method to firmly eject the rounds each and every time with every tactical and administrative reload so you'll develop muscle memory and never find yourself confused by what you need to do to eject the rounds;
3') you can conduct the entire reload by feel with no need to take your eyes off the threat;
4) you'll never render your revolver inoperable by getting a cartridge under the ejector star.
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Otherwise, I don't have issues with your method.
The FBI reload is extremely fast and works well with a full length ejector rod and low pressure rounds like the .38 Special that are easy to eject and don't put much heat in the forcing cone. However it also puts you in a near wrist lock and puts you in a hunched forward head down position that makes it harder to keep your eyes on the threat.
The Universal reload works better with short ejector rods and or longer high pressure rounds like the .357 Magnum, even if it is slightly slower. However it still has the same wrist lock, head down downsides.
The Stress Fire reload is a little slower, however it is better suited to rounds like the .357 Mag that put a lot of heat into the forcing cone and can result in the forcing cone burning the side of your middle finger with the FBI or Universal reloads when you press the cylinder out of the frame and rest the revolver on the side of that finger. It also leaves the unloaded revolver in the left hand but without the wrist lock and head down issues, so the slight loss in speed is offset by significant real world advantages that are not accurately covered in practical handgun matches.
The point here is that there are pros and cons to each revolver reload method that shooters have to fully understand.
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Context is also important. Someone in this thread mentioned they like to practice the "shoot two, load two" method. That's fine I guess. But it's an outgrowth of the Newhall shooting and a response to how firing six rounds and then reloading with a dump pouch can go wrong.
When I started in law enforcement, we had a police chief who was basically anti gun. Six shot revolvers with department issued .38 Special and only 6 rounds in a dump pouch for a reload. No speed loaders, and in fact not even a 7th round in the dump pouch even though it was rare for an officer not to drop at least one while trying to reload under speed and time pressure.
The "shoot two, load two" response to the Newhall shootout was really "shoot the revolver dry, eject the cases, single load two more rounds and then get back in the fight, fire two more rounds, load two more rounds, rinse and repeat".
The idea was an officer or agent would spend less time head down single loading two rounds than he would a full six rounds and be less likely to be shot while distracted and oblivious during the reload. On the other hand the officer or agent would also be reloading three times as often in an extended shoot out, so it was clearly biased toward the idea that shoot outs would be short affairs where no more than a couple more rounds were likely to be needed.
The use of speed strips helped speed up the process and greatly reduced the potential, to drop rounds, but the cylinder still had to be properly indexed to ensure the revolver went bang when you pulled the trigger
But…the whole concept was also driven by police chiefs like mine that refused to embrace speed loader technology that had been around in one form or another since 1935 and or who just didn't want officers being able to reload quickly out of fears they'd shoot more.
)OK, so maybe I exaggerated just a little, but . . . ) took over and it became an equipment race that (I believe) unfairly defined stage design to the exclusion of anything "practical". 
