Why abuse the pistol just because ya can?
I don't and wouldn't. Even if everyone here said it's OK to let it slam home, I wouldn't. but before I would say anything to a friend of mine about, "hey, that's not a good idea" it's nice to know the mechanics behind it. I'd not stick my nose in a strangers business either. So if they are at the range, short of personal safety issues I let them alone. BUT if they were to ask..
The same goes for using +P rounds and others. If I really thought I needed MORE power, I'd be shopping for a 10mm with a frame beefed up for 10mm. Or carry a 44 Mag wheel gun.