I've owned and carried this in a Maxpedition mongo for about 2 years now. I use it to carry my Glock 27 which fits wonderfully (as does my 17). Adjustment isnt the easiest thing to do, but once you get it adjusted for your gun it doesnt seem to loosen up or move any at all. Granted my gun pretty much lives there, so it's not put through multiple withdrawals and re-holsterings daily however it seems as if it would hold up very well in that environment as well. I have several Maxpedition products and have yet to see anything bad from their company.
Pros: Works very well, price is fair, holds up well over time
This review was written in the old system and had content requirements that are different than reviews written today.