It only makes it more difficult to ND into your leg/butt/balls while holstering. It doesn’t make a difference for any other time the shooter is handling a firearm.
It makes a difference because when most shooters who ND and injure themselves do so is when they are holstering.
I'll bet there were those who ND'ed DAO revolvers...
There is no trigger that is operator proof.
There are just trigger arrangements that offer a greater margin for error than others.
The Sigs I've handled lately are flat out disturbing. Their "Scorpion" is exemplar. That thing is essentially a 1911 with no safeties.
The M17 at least has a manual safety, even if it doesn't do anything but block the trigger.
There will be consequences that result from this proliferation of fully cocked striker fired pistols with short, light trigger presses.
3/15/2016