I just wanted to add a few more comments.
First, I agree with those who say carrying a gun at the small-of-the-back is a bad idea. Not only is it uncomfortable and increase the risk for serious, possibly permanent, injury if you fall on it, but it can be difficult to keep it concealed. If your shirt or jacket tail rides up, such as when getting up from a seated position, it's possible for the gun to be exposed and you may not be aware of it. If you do become aware of it, it can be difficult to fix discreety. Another point against 6:00 carry is that it can be much more difficult to protect your gun from a disarm attempt than other positions.
Second, I agree with the need for a good, well-built gun belt. I prefer Beltman products, but there are other excellent alternatives available. The important thing is the belt's construction; simply having a thick belt isn't enough. A leather belt constructed from two layers with the grain arranged in perpendicular directions allows the belt to retain it's flexibility to go around your waist but still provide enough lateral rigidity to support your gun. Some belts have a reinforcing layer to make the belt even stiffer. A thick, single-layer belt may provide enough support when new, but many people have reported that such belts lose that support in a relatively shorter time span, sometimes as little as a few months, while double-layer belts are often reported as providing several years of service; it may save you money in the long run to get a good quality belt now.
As far as belt width, a 1.5" belt is probably the most flexible option as many holster makers use this as their default belt loop size (a snug fit between belt and belt loops is important) yet it provides enough support while looking like an ordinary dress belt. With a good belt you might even be able to go down to 1.25"; I use that size with my 642 but not with my 3" 65. While jeans may have 1.75" belt loops, they're most likely sized for thin, single-layer belts. A 1.75" double-layer gun belt may be too thick, especially where the end of the belt comes through the buckle, essentially creating 4 layers of leather.
Of course, these are just my opinions. I'd suggest reading all the posts here and elsewhere in the forum, do your research, find the equipment/methods that you believe will work for you, try them out, and see what actually does work for you. I'm sure I'm not the only one here who learned what worked through trial-and-error. It's important to keep in mind that what works for me or someone else may or may not work for you.
