No one's tried I'm aware of, but there is a 4 or 6 conductor ribbon cable under the top cover and PSG (electronics board) that connect to a rotation/position sensor inside, and 4 wires attached externally.
Dunno how sensitive those leads are to length or other stray external effects, but see no reason it couldn't be moved to a friendlier location - we just need someone brave enough to tear up a good working VP-44 to try it! :-laf :-laf