The owner of my local B&M has 2 or 3 that use 6 15ml or 30ml glass bottles. Looks like a hooka. The "Revolver" is single person use (one flavor at a time). The atomizers are modified IGO-W.Two hole drilled through the base for SS wick then mount on a custom built SS cap for the bottles. VW or by pass the circuit to mechanical with 4800 mAh battery pack built into the base. The other one is not a revolver, but 6 people can vape at the same time. It plug into the wall and only mechanical.
Don't know about six chambers, but Vapor Beast has something called something like the switchback something, basically an ecig battery assembly that has a tank on both ends, so you can switch flavors.