I prefer the riggers belt by Black Hawk. I wear that any time I am doing anything serious. The belt is designed to be able to rappel from as well as hold up your pants.
I am with you on riggers belts. A belt ought to be able to do more than hold up your pants.
Just for grins, I did rappel with one. It gave me a super wedgie, and more significantly, tended to ride up and hinder breathing. But it worked.
I have used mine as a sling in setting up a rappel anchor. They are handy items to have around (your waist).