I think we have some misconceptions here arising from a lack of familiarity with the device.
Safarilands virtually cannot release unintentionally if they are properly locked. Comps are loaded bullet noses up, holding the body only, while the lock knob is turned to lock in the rims. Doing it any other way can result in the locks not getting a grip on the rims.
The important feature of the design is that the trigger is covered by the rounds and is deep in a recess where practically nothing can get to it except the extractor star when the fresh rounds are deep in the chambers.
This is in contrast to the HKS type, where the actuator is not only prominently exposed, it also doubles as the handle.
That is where HKS loaders have their worst problems: the method of manipulation is also the trigger, and doing one operation can and does cause the other.
It's true that faulty handling can bring about unintentional dumps. The problem is that under duress, improper handling is more common, and more of an issue.
Another misconception mentioned above is that the knob on the top of the Comp Is and IIs is an actuator. It is not. It is only the locking mechanism. During reloading, it is not in use for anything other than possibly as a handle. The knob is not pushed, turned, or anything else as a part of the recharging. That is what helps make the Comps so much more secure.
Still another misconception is that all Safarilands are spring-loaded. Only the Comp IIIs are. The Is and IIs are not.
Another is that the HKS is more compact. The Safariland Comp II takes up the same amount of space as does a similar-sized HKS. A Comp I is actually smaller and takes up less space.
Only the Comp III is larger, because of the long handle.
That long handle is a significant help to the recharging process. since it allows the shooter much more control to steer the new rounds into the chambers, and gives much more security of grip during fast manipulation. It's much easier to keep control of a Comp III than an HKS while rushing it towards the cylinder.
It so happens I officiated at an IDPA match this very morning. Two of the competitors in my squad did not have enough Comps for the stages and so used HKSs for their second and third reloads. Those reloads were significantly slower and less positive, measured in terms of several seconds apiece.
I will also reiterate that in the many, many hundreds of competition runs I've seen with Comps, only once have I ever seen a premature dump. With HKSs, even good shooters can have it happen every month or so, and the less-practiced ones have it happen at least once during any longer match.
I understand you believe I don't practice enough to handle my speedloaders, but that would be wrong- I practice dozens a month, sometimes fifty or seventy a week during the season. Even so, mishaps occur under pressure during the stage runs. That's why the more reliable, controllable, and secure Comp series loaders are overwhelmingly more common among experienced competitors. They use what they have found actually works the best.
In the past, I've stood up an offer to other forum posters here and elsewhere that if the other person would actually acquire and seriously attempt to use Safarilands, and they still insisted HKS loaders were better, faster, and more secure, I'd buy the Safarilands off them no questions.
I've never been taken up on the purchase, but I have had a number of converts thank me.
I suggest a similar test to those with misconceptions like mentioned here.
