Mr. Del Fatti's tutorial, following on Mr. Garrity's comments, is very instructive.
The part about "what's most important to you?" is one that's important to get right. At a recent school I attended, the instructor recommended for everyday CCW a strong side belt holster of Kydex, similar to the training holsters that many of us were wearing, adding that it's little trouble to conceal it with a light jacket, and was fast on presentation.
The problem with that generic advice is that it fits his situation, but not everyone's situation. He's a retired LEO who could easily deal with an accidental discovery of his pistol, and he lives in a temperate climate where light jackets are fairly common.
But if you're a civilian who lives in a hot climate like Florida (as I do), the game's a little different. When carrying a 1911, I carry IWB exclusively because it does the best job of concealing the pistol, while still making it readily accessible. The butt can be concealed by as little as an untucked T-shirt or polo shirt. In either case, it's a lot more discreet than an OWB holster, and a cover garment that might look out of place for its environment. Absolute speed of presentation is not as important to me as absolute discretion of carry.
YMMV, but then, that's the point.
