So I got my Sena dual set finally. I suggest something other than rocketmoto. They cancelled my order without talking to me and basically was like "our bad" and did nothing to make it up to me or ship it out quicker...
The Sena though is well made. I have yet to try it out, but here is the unboxing.
It came with two of everything. Two cigarette chargers, two wall charger hookups, two usb cables, two audio cables.
The installation was a breeze and it would be easy to hook up to multiple helmets quickly if you get extra velcro from walmart.
Will have a performance review once it's charged and tested.