The real use of rigger's belts is to clip in with a short lanyard to avoid falls, not to catch falls or rappel. Taking a fall onto such a belt is pretty much not a real option. Rappelling down a steep but not vertical face, like a road embankment, is doable but not comfortable.

I use a Wilderness 5-stitch 1.5" model as a CCW belt because it provides great support for the gear.