Wyosmith said:
The used of some of the push-button plastic holsters have lent to such accidents from time to time because the tension needed to press the buttons has caused some people under stress to slip past the button to the triggers.
I for one don't allow them to be used in my classes for that reason.
Where? Not your class, but proof of these cases. Not trying to be rude, but I carry a Serpa CQC off duty, know several LEOs who use them, both level II like my CQC and level III, and not one single incident of that has happened. Nor have I ever read about one, save for something like your post. Now, I'm not saying it hasn't happened, anything is possible, but the inherent design of the Serpa puts your trigger finger alongside the frame, not in the trigger guard. I just want to see some documented proof, outside of someone's post.
As too the manual safety issue, it does indeed work both ways. I've seen LEOs at the range look silly when they forget to disengage the safety after drawing, usually on a 1911. Imagine that in a high stress situation.
IMO, it's all in how you train. I'm sure some civilian somewhere was shot with their non-manual safety weapon at one time. I don't know of any specific case of it. Just like I'm sure Wyosmith is correct and someone has ND'ed their non-manual safety, or manual safetied (as you are supposed to disengage it as you draw, correct?) weapon when drawn from a Serpa sytle holster.
I train that if someone is going after my duty weapon, currently a decocker only FNP-9, my Ka-Bar TDI comes out, and someone is getting cut. If only enough to getting spacing and either get to my car and get my carbine, or draw my pistol and end the affair.
One can't train for every situation, and one can't pick out their BG. One can only train as best they can and hope it's more then enough when the SHTF. Manual safety or not.