Also if you have a different holster you prefer over the Crossbreed and would serve the same purpose, I would like to hear about it.
I know Crossbreed has a great following, but I prefer the Comp-Tac Minotaur. Very similar, but one crucial difference: how the retention works.
The very first holster I bought for my Walther PPS was a Crossbreed. The first time I put the gun in, I literally couldn't get it back out. With the holster in one hand and the gun in the other, I wrestled for five minutes to get them apart.
The problem is that Crossbreed molds a "bulge" where the ejection port is to aid in retention. My PPS has an extremely sharp edge on the top of the ejection port, and that edge dug so deeply into the Kydex that I couldn't get the gun back out. After sanding that spot on the inside of the holster it worked much better. But not good enough to inspire any confidence drawing quickly.
So I ended up buying a Comp-Tac Minotaur, which has several advantages, and one disadvantage. The first advantage is no bulge at the ejection port. Second, retention is easy to fine-tune via two allen bolts. Third, the Kydex half-shells can be swapped out for different guns. Fourth, you don't need to order the combat cut to facilitate quick draw; it's already cut that way. Fifth, the leather covers the back, so the metal nuts are covered. The one disadvantage is that the clips are plastic. I haven't had any problems so far, but I think the metal clips on the Crossbreed are nicer.
I'm sure my problems had as much to do with my model of gun as the holster itself. If the ejection port hadn't been so sharp, it probably would have been OK.
As it is, I'm extremely happy with the Comp-Tac. Actually, I also have a Comp-Tac Infidel. The Infidel is great because it's really fast to take on and off my belt, but for long wear the Minotaur can't be beat.