most of the time, OWB and leather, for most of my guns. For my snubbies, it's about a 50\50 mix of a classic Bianchi OWB belt clip or slide holster, or a Sticky pocket holster, depending on setting and the general mood of the day.
I don't have any IWB holsters, and very little plastic or kydex, as IWb is not comfortable for me, and most places don't make Kydex rigs for what I carry. I tend to carry a full size handgun, with a compact companion piece as a BUG, BUG in pocket, and the full size, if i'm on the bike or in colder months, in a shoulder holster, cross draw on belf under a light weight outer shirt in the warmer months.
Now, I will admit that I did use an IWB back in NY, but that was due to having to CC there, as OC was not a legal option, and I prefer to carry full size handguns. Here, OC is legal, and a flash of holster is not PC, or "Printing." I also use a Serpa for the G19, as that is what it came with, and I do have a few uncle mike's holsters for hunting, when I don't want to use the leather, while hunting or fishing, as well as a retired military holster or two for the M9 and my 1911s.
What I carry, and how I carry it just depends on the day. and yes, i do have a couple items made ib kydex. All of which are knife and shear sheaths.