A note to the curious- the light holder is NOT designed to fit a Surefire G2. The G series is slightly fatter than the P series; I didn't pay attention to this and ended up cutting slits in it to accommodate the G2 (though now it works fine).
The design and feel is similar to that of a kydex paddle holster. This is a good accessory if you want to be able to take your gun gear on or off quickly. The light holder will cover the tail cap of your surefire light, keeping it from twisting around accidentally. The curvature and material of the paddle makes it comfortable to wear at 3:00 or 9:00; however, the body is hard plastic so it won't feel good if you position it behind your hip. Paddle-type carriers also tend to stick out a bit more than their leather belt-loop cousins, so it won't conceal well under a t-shirt.
If you want a relatively cheap paddle carrier that you can wear on-the-fly, then this will serve you well.
Pros: light, comfortable on side of hips, good retention, easy on/off
Cons: somewhat bulky; hard plastic is not fun to sit on
This review was written in the old system and had content requirements that are different than reviews written today.