I shoot CZs and I use race holsters in IPSC/USPSA (just not at the same time). I like the Johnie Lim designs: LimCat, Ghost/Superghost and the newest Universal Shooting Academy. Why? All 3 have locks that can be activated ON the draw without taking extra time. All 3 have a tab or lever that extands just past the triggergaurd; in locked position the gun WILL NOT come out but in the draw, the lock disengages as quick as an unlocked draw.