I had one, and it wasn't for me. I was using it to conceal a Glock 33 (baby frame), and there was too much of a bulge evident - right to the right of my crotch. (This was with Levi's loose-fit jeans, and I wasn't too fat for them, either.) I got lots of odd looks when I wore it to a work-related gathering. No one made me, I think, but I felt awkward, and it made me not want to use the thing unless I wore it in the back with a shirt over it. And, hey, why not a standard IWB holster in that case? (BTW, the "pager" looks like crap; get the optional knife sheath to use with it.)
I suspect the thing would actually work better with a large flat pistol like a 1911. But, for me, I'm sticking with my Blade Tech UCH.