I've carried a Springfield XD 4" in .40 S&W and a Glock 27 in .40 S&W in a Crossbreed both with a 5.11 tactical casual belt and a Beltman belt.
My opinion is that the crossbreed is a good holster that comes fast in the mail. Mine has wore out significantly after 2 years. I am now awaiting a Milt Sparks Versa Max 2 in hopes that it will last longer. Do not buy the "uncle mikes" or any other "cheap" IWB holster from Gander Mountain. The Crossbreed came in like 2 weeks, and the Milt Sparks has a 6 month waiting list.
As far as belts go, I liked the 5.11 tactical quite a bit, especially for the price, but again it wore out significantly withinin a year and a half. So with the beltman belt, I'm very happy. It took about two to three weeks to break in to where it was very comfortable but I love it so far.
Maybe in the future it would be cool to get a combo from Milt Sparks or Mitch Rosen.