gunlock

I just bought a Kimber Eclipse and it's a lovely gun. I'd like to use it to shoot IDPA, and would love to find a good OWB holster for it that won't scratch the finish. On that note, I have two questions:

1. Which holster material should I get to minimize finish abuse? (kydex, leather etc)

2. If Kydex is ok, then I'm thinking of either Comp-Tac or BlackHawk Serpa. Opinions?

Thanks guys,