In full disclosure, I've never shot a PPC match, but I'm getting ready to shoot one next month, so I've been perusing the rules and courses of fire. I personally see little benefit in a "race" holster for the PPC game, given the very generous "par times" you get to shoot each course of fire...shaving 1/10 or 2/10 of second off your draw time is just not going to matter in PPC.
I have a Bladetech kydex OWB holster that I use for IDPA and I think that will be just fine for my PPC match. I also think I'd worry about the gun falling out of a race holster, if I bumped up against something, or was scooting around picking up brass.