Comp-Tac also makes a great Kydex holster. I have several of them and they are all excellent.
For USPSA Production, you probably don't need a DOH style holster. The new rules haven't been approved yet (as far as I know) and there was still talk about modifying them to keep the DOH legal. Still, you'd be hedging your bets if you didn't get a DOH style.
Jim