my setup....early fitment stage...I later machined an aluminum dogbone to replace the cross bar and I mounted the combo switch on the dogbone. Paul at HDB helped me out with the adaptors that bolt to his existing top clamp setup. The system proved to be simple, easy to work on and around, and I hardly noticed the weight effect on the bars.
The ICO, F2R, bracket, and bar clamps all came from Charlie at RMS.