There was a guy at Gabe Suarez's Frontsight acadamy in Nevada who shot himself in the leg do to a trigger shoe, not a good thing on a combat handgun.
I'm surprised they didn't make this guy remove it.
I'm quite fond of target triggers on revolvers, even for double action work. But long travel and a heavier pull gives you more room for error than a 4 pound 1911 trigger.
Of course, not getting on the trigger until you're on target isn't a bad idea either.