Some Dude said:
No love for Galco in here?
I wear a Galco Triton Kydex IWB almost every day. Took a little getting used to at first but, it holds the gun well, draws nice, and it's real easy to re-holster. I have the optional belt loops for it as well since the clip that comes with it looked pretty flimsy.. The clip actually works pretty good. I have yet to have the holster come out with the gun while practicing. I do wear my belts tight though since I am a fat ass. Only down side so far for me is that it makes rub marks on my trigger guards (polymer frames not sure about metal) but, I really don't care since they are carry guns that I consider a tool not some thing I'm planning on handing down to my kids like a full on custom high end 1911.
I also have the Don Hume that Gus posted and I like it except for the clip and it needs more re-enforcement at the opening. It is fine if you have a belt made out of thin material but, if you have a thick belt like one of Don Hume's gun belts the clip won't fit over it correctly. Also, once you draw the opening closes and it makes it harder to re-holster.
Blackhawk makes a Leather IWB for the P226 that I like. Has an adjustable tightening bolt so you can change how easy it is to draw. The opening doesn't close up as much as the Don Hume mentioned above. Has worked well for the time that I carried it every day.
For OWB carry I just use a Blackhawk Serpa CQC. The only time I use an OWB is when I'm open carrying and I like the Serpa for that.