I recommend that you take a look at Long's Shadow Holsters (lsholster.com). They have excellent IWB and OWB holsters, competition holsters, offer them with thicker kydex and custom colors if that's your thing. I use a LS Antero holster (OWB) for my 1911s and for my SAI XD45 Mod 2 sc. I also have their two mag carriers for each pistol...I'm totally pleased. I may pick up FDE versions for my XD9 Mod 2 sc when I wear khakis with a khaki pistol belt. My leather gear has been Galco Combat Master or FLETCH holsters and mag carriers. Both manufacturers are excellent with durable, high functioning equipment. I've been betting my life on them for a while. All conceal well under sweatshirts and polos.
Cheers,
Harry
PS- I have used Comp-Tac IWB and Blade-Tec AIWBs...both very good but I prefer OWB.