Does the idea of carrying a holster with a mechanical retention (SERPA, Bianchi paddle-lock, etc) scare anyone else? If something breaks or goes wrong, your gun can be stuck in there. The SERPA, especially, can be prone to getting grit behind the release which can lock it up. Not that most CCWers are rolling around in the dirt, but if you're in a fight, that'd be the time you would be doing so...
Personally, I'd stick with the basic thumb break if I wanted retention on my concealed holster.
That said, I open carry in a Safariland 6004 drop rig with the retention bail, but I've never seen or heard of one of these failing even when encased in mud...plus, it's what I have to use regardless of my personal feelings.

