My dad wore suspenders to work for years. I'm beginning to understand why. I get tired of having to constantly readjust my pants. And that's with a belt.
I have been thinking of switching. Suspenders make way more sense. With a belt, my pants still fall down unless I have the belt so tight it cuts off circulation. It's just cinching the pants around my waist and movement (such as going from standing to sitting and vice versa) can cause them to slip. But suspenders literally hold them up from your shoulders. Ain't no way they'll slip.
After two days I finally get that you're not talking about non existent rings around the belt holes but are talking about the darker buckle lines on the belt that are inbetween the belt holes.