I've frequently heard the recommendation that if one wants to feel like a new shooter all over again, practice weak-handed. Since I sometimes shoot as much as a third of my ammo WHO, and being naturally left-handed to start with, running the gun southpaw doesn't feel exceptionally strange.
As a matter of fact, since I switched to the M&P from the 1911, I don't know as I've ever used my left thumb to trip the slide release, since I just naturally use my trigger finger when shooting left handed.
But, man, holstering left-handed is hard. Was it this hard right-handed at first? I can't remember. Dang. The Summer Comfort has a little more cant than I've been using for the last couple years, and it's slightly more snug than kydex, but that doesn't account for all of it; most of it is it's just a very unfamiliar task for my left paw.
If people try to rush this, no wonder folks get themselves shot.
ETA: I just also ordered a blue gun to supplement the Umarex M&P. I can't believe I hadn't done that yet. But if I'm going to be doing a crazy lot of left-handed draw-and-holster practice, the inert blue gun will be helpful. There goes a big chunk of my fun show money for January. Anybody want to buy a magazine article?
(See? It's all this ancillary gear that made me so reluctant to change
handguns for so long. If it was just "Swap out the gun in my 'carry
rotation'," that'd be one thing, but it's the gun, the spare gun, the other spare gun, the IWB holster, the gamer holster, the LH holster, the .22 trainer, the blue gun, the thirty-eleven magazines. I already had all that stuff for the 1911.)