OMG.. i saw this post and man.. i'm intrigued. i have the BR7 strap now and i think cinch will actually do better at adjustment on the fly. also, it's conected at two points instead of just one on the BR7.
this looks very good idea..
The Cinch is a better option over the BR imo. Now, if Luma can make a solution for two bodies. 

You guys posting about receiving yours is making me frustrated. 




