google serpa negligent discharge
http://www.thehighroad.org/showthread.php?t=164512
and the several sticked posts at
http://warriortalk.com/forumdisplay.php?f=22
are a good place to start
No, I haven't seen it myself. The fact that instructors at various defensive pistol schools have seen NDs, and subsequently BANNED the holsters from their training programs is enough for me.
I vast majority of schools/training programs have not banned or restricted this holster. I find that many instructors have their personal thoughts - that alone is not enough for me.
I'll stick to more traditional retention methods (that also can't get gummed up by sand/mud if you end up on the ground).
Any retention method can refuse to release or not function/retain given the right circumstances. Snaps/thumb breaks have refused to be pried open even.
I've also heard reports that in a takeaway situation, it is
very easy to break the holster off the paddle, resulting in, at best, a control struggle where you no longer have your belt as an advantage.
Cite? Are you maybe confusing this with the video that circulated for a while about Fobus holsters?