Thee are many folks that hate moon clips just like there are many folks that love them, not to mention those that fall in-between the extremes.
It is such a shame that the instructors that are advising you do not see the tremendous advantage that a J-frame sized, moon clip enabled, deep cover, personal defense revolver presents.
In a deep cover, personal defense role, moon clips do not shine for their ability to load a firearm quickly, they shine in their ability to eject all spent brass.
Small revolvers like the 2" barreled, model 442, have short ejector rods that do not get the brass clear of the cylinder at the end of the stroke. A positive and distinct ejection stroke must be used, preferable with the muzzle pointed up to try and make sure all casings leave the firearm and nothing gets left behind to catch under the extractor star or be plucked out one at a time by hand.
A moon clips eliminates the possibility of leaving cartridge casings in the cylinder since all cartridge casings are linked together and additional weight is added to the group. Far less effort is used to eject the spent shells.
For reloading the firearm a speed strip is optimal in the deep cover role since it sits flat in the pocket.
Remember for most that carry concealed in the US, this is not a Law Enforcement situation. They are not knowingly and willfully walking into a armed confrontation. If they were knowingly and willfully walking into a armed confrontation they would be better armed than just a Smith and Wesson J-frame.
As a private citizen you do not have a duty to stay in the fight until all citizens and property have been returned to safety and the perpetrators have been rendered ineffective.
In a personal defense role you are carrying a firearm to get your butt out of a situation that you never expected to run into.
Simply having a firearm with you is much more important than having lots of reloads with you