Our duty gear is nylon, and I've found that the 5.11 Double Duty TDU belts are excellent support underneath our duty belts. They also easily support my concealed carry revolvers (Yes, I carry two.) when I'm dressed casually (99.99% of the time). I have a 1.75" and a 1.5" belt that work with various holsters, depending on the belt slot size.
My brother swears by his Amish belt. He wants a black one to go along with his brown one. Luckily, the Wanenmacher Arms Show is coming up on March 31/April 1!
ECS