[Hectic]

Im a smaller guy as well when i wear my chest rig i use a belt (one of the thicker cordura belts 3inch wide i think)
Taller guys would be able to let it hang below the rig to attach other stuff to iflip it up behind the righ and it holds it steady (the strap on the rig itself doesnt tighten enough to hold it snug) and i run my drop leg off of it. Everything else fits on the rig.

I also have a battle belt type rig i run when i snipe (its 3 rows of molle most all the way around and has four on the back and five over the hips) it has a built in yoke/suspenders so its baisically a chest rig but its "short" from top to botom. Sill has a fair bit of room to it. But the way its made to sit you couldnt wear a riggers belt with it as it rides low over the hip.
A belt is handy to have just in case but it wont work with every setup