I've read too many gun books lately and am too tired to hunt down the reference, but something I read recently quoted a believable study/history/experience that when the SHTF, the fingers finding the slide stop release sometimes no-workie. Hell, my fingers don't work right half the time just sitting at my bench trying to put little sight screws into tiny socket wrenches. Seems believable to me, and I'm not working on a FAST coin just yet anyway, so I can spare the few extra subseconds.
Also, I watched a disturbing video (link somewhere on this forum) of some middle-eastern guy in a store get shot to death while trying to chamber a round from his Israeli-carry pistol. Seems like he got stuck on getting the slide to release while the BG was filling him with lead.
But I'm getting a lot of good, stress-filled training at NRA Range with folks in the next lane over doing things like trying to perform a cardioectomy by using their chest as a muzzle vise for clearing a stovepipe. In spite of all that was going on (whack-o's next door, lane face/edge controller malfunctioning, slide "auto-forwarding", wife melting down) I was able to get my 6-round-from-concealment "Bill Drill" time under three seconds which was a milestone for me and my bifocals.