I use a Serpa with paddle with a Glock 27 and it just so happens to fit the full size G22 both in .40 fitted with the Crimson Trace Laser Grip.
It isn't the carbon fiber model but the $30grey plasticversion from Academy.
I like the retention device because it forces your bang finger to stay out of the trigger guard as youremove the weapon from the holster.
The paddle retention on other makes of paddle holsters is virtually non-existant, but on the Serpa, the retention has fingers that grip the inside of your pants, as well as fingers that lock on the bottom edge of your belt. It's easy to get it mounted-pretty much slides right on, but short of unbuckling your belt and britches to pull the retention fingers out a bit, it won't come off easily. It's actually pretty much a pain to remove that paddle but I like it.
It has many different mounting angles to choose from as well as a height adjustment.