You're giving up on IWB without actually trying it. The Remora holster is a neat concept, but in reality it is somewhat of a gimmick, albeit one with a huge following on this forum. Uncle Mike's stuff is what it is... cheap prices and cheap gear.
People have mentioned a few options... give any of them a try. Crossbreed, Comp Tac, UBG, Gary Brommeland, Milt Sparks, Dale Fricke, etc. It doesn't matter, but give a real holster a shot and see what you think.