Arc'teryx hit the SOF community in the sweet spot with their ridiculously comfortable and light-weight X350a climbing harness last year. It was such a hit that operators have been buying the harness and cutting off the leg loops to make gunners belts.
Arc'teryx responded to the cannibalization of their equipment by designing an even better belt. They made the hardware smaller, placed stiffeners at the sides to accommodate holsters or pouches when worn as a BDU belt and even thought to add a tether keeper so you won't rip the belt loop off your pants when your snag your tether while jumping in a vehicle.
Should be under $100 when it comes out early next year in "crocodile" and black.
UPDATE- This thing may never see the light of day. Arc'teryx can't find a way to certify it for use in a way that they won't be held responsible if it's used improperly. Risk-Aversion-Fail.
Update #2- The Rigger's Belt Lives! Looks like Arc'teryx is going bring it to market safety certified as a climbing harness. What you do with it is your business. We could see these out in the wild this fall.
Update #3- It's in the wild!
Arcteryx