I use a holster made by Python. It's just a simple snap holster but it does the job well. I got one with my p89 and liked it so much that I bought another one for my S&W model 14.
Uncle Mikes also makes a kydex paddle holster for that type. I had one and liked it a lot. The only problem that it had was that it scratched my gun a little. You can get either one for about $20.