I have made an adapter to accept Graphic RFH for 3x4 RB Graflex cameras from baltic birch plywood. It adds about 10 millimeters to the film to flange distance which requires shimming the view hood ground glass upward to its limit. Lens shorter than 135mm may not show infinity in focus until f8 or smaller with the focus fully retracted.
Butcher, no; modified or adapted, yes. Completely reversible.