I have never heard the term belt carriers. Is that an east coast term? I did use the googleto research...but it was no help.
Did find out Levi jeans were the first pants that had loops for a belt to hold pants up vs suspenders. Before Levi jeans, belts were associated with military uniforms and were often seen as decorative for non-military use. (According to the google).
(BTW, using the phrase "the google" is a nod to my sweet auntie, who would always ask me, "can you look something up for me on the google").
"What we practice daily is what we build a life on. Practice peace, love & kindness."