I picked up a blackhawk thigh rig with my kydex holster. It worked well, especially with the top clips on a belt or on my vest. Works well and doesn't move, but makes it a little harder to squat like I often do. Besides, the only purpose would be to hold it there when walking to/from the field. It is also a bit bulky, even if it is pretty solid.
at post #302. It's the second from the top. What I like about this setup is that there is a lot of flexibility with adjusting. Also, to remove, just push the two top buttons, and no more holster (once you remove it from the leg).