I took a chance on a 511 leather belt that was about $35. It's black with a "normal" looking buckle, can be a regular dressy belt. It's very stiff as it should be, and it's 3/16" thick which is thinner than my specialty leather gun belt. I disagree that a gun belt needs to be thick, many holster clips won't hold well on a thick belt. And some belt-slide holsters won't fit through the cutouts on some holsters.

So far it's worked well.