Hi, Daniel
I have a Flexbody which has been modified so it gives sideways swing and shift as well as all the other features of a Flexbody. It was dubbed the "Bendyblad" and about 200 or so were modified by a camera technician.
The item is quite rare but cheaper than an Arcbody and it accepts all V series lenses and digital backs. I have used it successfully with 17–60MP backs and 30–250mm lenses.
If your friend is interested, I can send full details.
Roger