This does work, I have taken lessons from PPC champs (they favor revolvers)
My Dad and a close friend of mine (ex-Navy SEAL) both favor revolvers also and they glide the trigger guard straight back and squeeze the trigger at the very end of the stroke.
Both are incredible shots and I have used this technique with sometimes mixed results.
I shoot very well using both methods but really must decide which one to use.
Any thoughts on this...