For now, all my IWB holsters are MTAC. G19, G26, PM9. They are not pretty, but they work well once broken in, and they are pretty comfortable.
I will eventually try an all leather IWB, probably. Based upon my impressions of Tim at TT Gunleather (and his holsters), I will give one of his holsters first nod.
The Barackalypse is upon us