Supporting the weight of a gimbal has been done by in a variety of ways, but the latest trend is being coined as exoskeletons. There are a few already available, but Tilta - known for making exceptional camera rigs, has an exoskeleton Gimbal Support Vest called the Armorman. Two mechanical ISO Arms (similar to steadicams) are attached to the arms of the operator to carry heavy gimbal setups.
One unusual feature is a V-Lock battery plate attached to the rear of the vest. Possibly to run power to your camera setup while relocating that battery weight off the stabilizer.
Asking price is about $2300+ US dollars. The vest has been shown around the web for some time, but this is the first time i've seen it available on eBay (click here).
Tilta Armorman Gimbal Support Vest