I carry my M&P's in a Safariland 18 IWB. I had a Galco KingTuk,it was ok, but not as good as my Theis for my 4003. So I returned it. In order to get it to sit as low as I wanted the kydex was below the top of my jeans enough that they covered the kydex, making it a 2 handed reholster.
Here's my Safariland with my FS M&P