Funny you should ask. I just bought one last week for my CZ 75 and used it at the range Saturday.
I think it's usefulness depends on what you're going to use it for. Great for Range use, possibly good for IDPA (I'll let you know how I liked it for that next month) but probably not so good for everyday CC.
When I got mine it was SO tight I thought I'd have to cut my CZ out of it. I looked online and found a few fixes, so it seems just about right for IDPA now, but I'll need more practice. While reholstering, I DROPPED my CZ on the concrete
I have also read they are prone to breaking easily at the paddle attachment, hence not so great for daily duty, but I have yet to test that.
Hope that helped.