from my understanding, it is not the lock itself, but the position of the booger hook after disengaging the lock in relation to the trigger (with some exceptions being pebbles or whatnot getting in there and messing the lock/trigger area).

do you feel you need to have kydex? there are lots of MOLLE backed nylon holsters that you can affix to web gear, belt or a drop leg platform. after-all, you said you want versatility.

http://www.optactical.com/modularholster.html