I've been using mine for a few days and generaly like it, but have one complaint: the clip sits too high for my taste. Using the OEM holster the BB hangs about 2/3 below the belt and 1/3 above it. With this holster the opposite is true. So now when I sit down, it pokes me in the ribs (even though I wear it on my side and not in front) and I have to turn it horizontally; I didn't have to do it with the OEM holster.

As far as slimness is concerned; the Seidio case appears slimmer, when compared to the OEM holster, but because of the high position of the clip, it actually does not hug the hip as well as OEM holster. So it actually sticks out further out.