I am just sad Andy Arratoonian never got an apprentice so is out of the game. LOVE those, esp for 1911. No, you can't have mine.
The only other leather I own anymore is Milt Sparks. All those are IWB, but I trust them implicitly so would go for that.
Style wise, I'd think about how you are using it. Are you gonna be doing work, walking around a shop or the woods, so maybe it bumps and snags? Then think about the front loop style of the 60 and I-BAK. More room on the belt, but also holds it smoother, and generally tighter and higher.
Everyone's body is different; higher tends to be more comfy to me, but by no means is true for everyone. Try some cheap ones (even to nylon and clips) and move around the house; see how you deal with cant, height, etc.
Also I have to ask: concealable important but OWB? Do you wear a cover garment all day? Lots of IWB is very comfy now, and I for one can do a full size gun with RDS and WML all day, in waistband.