why practice with something different from what you'll be using to protect your life? POI is always different, sometimes drastically. there's no way i would bet my life on the difference.
and i really just don't get carrying a chambered round on a glock. the lack of a positive safety would make me very nervous.
I would with the NY trigger, which is heavier and much like the DA pull of a revolver (which is my preferred item). Also, a most gunfight distances (7 yards or usually less) POI is less of an issue, although you should be familiar with where your gun hits with your carry ammo.
Ultimately the user is the safety. I carry a chambered round in my Glock and I never get nervous about it. The weapon will not fire unless I pull the trigger. What's to be nervouse about?
Because if I'm just plinking or playing IPSC games I don't want to be dropping $0.60 per shot.
POI is always different, sometimes drastically. there's no way i would bet my life on the difference.
That's why you practice with the carry ammo too.
Besides, at CQB distances a slight change of POI won't matter much. At 5 yards or less, what's the difference?
i really just don't get carrying a chambered round on a glock. the lack of a positive safety would make me very nervous.
Then don't.
I do like it, as "pull trigger go bang" works every time without "oops, fergot to flip THAT switch". Keep the gun in a proper holster and nothing will touch the trigger.