The majority of such incidents I have read about have been cops, professional gun toters.it is only fair when a poster asks about a guns safety features that we not overlook the tendancy of some people to shoot themselves with it
I much prefer a semi auto with a decocker and a heavy DA trigger pull with a lighter SA pull on subsequent shots. You rarely hear of AD's and ND's with these guns.
The rumor mills has it Glock now puts manual safeties on it's guns sold outside the U.S., but is afraid of litigation here if it does so now. A great rumor, but absolutely no confirmation of it yet.
My impression is Glock is a great open carry gun for the pro despite the AD rate, but horrible to draw from concealment by non-pro carriers on account of that itchy trigger.