I cant really say that the P11 is a true pocket piece. I would give that to the P3AT/LCP/P32, but YMMV. The G26 isnt a pocket gun either, but that doesnt matter since the OP specified IWB.
I agree that you would have to look a little harder to find a purpose/role for the G26. I have found that it is a great pistol for those of us that live in the hot and humid South. It hides well under just a t shirt. It also does well stashed in a bag as a back up, since it readily accepts all other Glock 9mm mags. Dont let its small size fool you though......