OWB, 3:30 strong side, M&P 9C in a leather Desantis MiniSlide with an Amish 1.5" belt. Rides high and tight with very little printing. Any cover garment works; sweater, untucked polo, light jacket, etc.
My other carry gun is a Kahr CW380 which I also wear OWB, 3:30 in a little leather Mitch Rosen belt slide holster. This gun is so small and compact I forget I'm wearing it sometimes.
I've tried IWB but it just doesn't work for me. I don't like pocket carry either. Even though the Kahr is small enough for that, it just doesn't feel right. For me, OWB is much more comfortable, albeit a little more difficult to conceal. I live in Michigan, where open carry is legal, so if the gun prints a little, it's no big deal .