...since I was a lad, I've heard and read of the Israelis carrying empty chamber...seemed nutty to me...till I saw demonstrations by the FBI at police academy showing us how easy it is to rake the slide on our holster, belt, or down the side of our pants and chamber a round...finger off trigger, of course...as I carried a Combat Commander, I practiced till I was good at it...not because I carried chamber empty, but in case I lost the use of a hand...safely done, it's fast and sure...
https://www.youtube.com/watch?v=LMsAvWOEj-k