I think the key is really a "systems" approach to your carry gear, regardless of what gun you carry. Several people have mentioned wide belts, and it's true that wider will carry wieght better than narrow-up to a point.
I use a Rosen ARG, SOS, and tapered belt for m 1911A1. The belt is tapered to 1" at the buckle and tongue ends, but is only 1.25" for the rest. I can carry my gun, a 6Z light, and a spare mag all day long comfortably. The secret is in the thickness of the leather used (and the fact that "Snug" Rosen handpicks the highest grade leather-the stuff he rejects is probably too good for the mass market manufacturers.)
Try to get a holster with belt slots that are cut to the exact width of the belt you plan to use. This will eliminate play, keeping the gun not only positioned where you want it, but also reducing fatigue from not having weight bouncing up and down on your hip all day.
I will have to say that in the last year or so, I have begun to develop a touch of some sort of bursitis or other arthritic type condition in my left hip (off side; I'm right handed.) The thinner belt will cut into my off-side waist more than a thicker one, and aggravte that condition. However, it's a minor thing. I'm going to be getting another Rosen setup soon, and this time, I'm just going to stick to a 1.5" belt.
BTW, I'm about 6' & 185#.
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Shoot straight regards, Richard at The Shottist's Center
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