Well..From a little research, the Flexbody and CFV work well together using the sync cable. People who are using this combo seem to be happy with the results. The Flexbody seem to most useful for "tilt" functions. The "shift" function is limited by the restricted "coverage" of the regular Hassy lenses. that is why the ArchBody was introduced along with the associated Rodenstock lenses. Wildi has good descriptions of controls, set-up and use.
After doing this little bit of reading, it looks intetesting. It appears to me that the major limitation is the lack of a "wide" CZ lens and the 1.5 crop of the CFV back. A minor annoyance would be the tilt is only verticle and to do horizontal tilt the whole camera need to be turned 90 degrees.
By evaluating the used marked prices, they cost about the same as the Mutar, which surprised me. I have been thinking about buying a 35mm T/S lens..this system may be more fun.
Now we need someone who has actually used this system and knows what they are talking about, to "chime" in.
Steve