A lot of folks who OC use one with retention (Blackhawk Serpa comes to mind first). I personally use a variety of holsters dpending on what I am doing and how I am dressed.
I mainly use leather holsters, shoulder & hip. One of my hip holsters has a thumb break while the other which is my primary holster is a basic open top. I also have a Serpa with retention.
Your situational awareness is key to the type of carry holster.