FWIW, I just got my Cinch a week or two ago. I've got one end attached to the strap mount near the mode dial on the left side of the camera and the other end to the strap mount on the bottom right side of my battery grip. What I really like about this arrangement is that I can use or remove my L-bracket without affecting the strap.
I was out shooting for a good 4 hours last Saturday with either my 35mm or 70-200mm + 1.4x on the camera and found it very comfortable to wear/carry in both cases. Also, as the camera obviously hangs differently (different center of gravity, different weights) with different lenses attached, the adjustability of the Cinch was much appreciated. I found that the length that worked best and was most comfortable for the longer lens assembly was not the same length as what worked best for me with the smaller lens. Fortunately with the Cinch, you can adjust it to suit the situation in an instant.
Now if they would just get their quick releases to market I'd be set.