I've owned SERPA holsters for years. I have about 5 of them in inventory for various handguns I own. I've used them on the range for much of that time, not so much for concealed carry as I'm not a fan of retention systems for CCW holsters, opting for open tops instead.
But in my years with the SERPA I've never had a failure of the lock. But others post reports of SERPA failures at various shooting events and even on deployment. Since I don't routinely roll around on the ground with my SERPAs, I figured I would take it upon myself to see just how easy/hard it might be to cause the SERPA to fail.
http://www.youtube.com/watch?v=htigDRr7tdM
Questions and comments are welcome.