MY OPINION: Aside from whether its legal (and it is here in Texas), why would an "average Joe" want to give up the tactical advantage of surprise by openly carrying? I know that some feel that it makes a statement, but most of the time that I'm out and about, I don't have another person "with me" to help watch my six. That means that I'd have to spend a bunch of energy (and time) scanning behind me. I'm too old and stiff to simply turn my head anymore, so that's a bunch of effort I'd just as rather avoid.
I've tried open carry while at home and also when out working on my property. I find that waistline open carry is a nuisance. Indoors, it snags and pokes on furniture (the wife didn't like that one bit) and bangs against door frames, furniture and cabinets. Outside, much the same story, plus all the little sticks, grass and other outdoor detritus get down in the gun and holster (and down in my pants if carrying IWB). If I were to carry in a shoulder holster, that'd probably be OK. I used to carry my 7 1/2" Ruger Blackhawk in a Bianchi X-15 holster when I was a youngster on the farm. It pretty much stayed out of the way, and that'd probably work better than waistline carry does. YMMV and your experience might be different. [END OF OPINION]