So, you think gen autowind module will not fit ?
it would be a pity that the gen parts did not fit for future repairs.
I don't think anyone knows for sure how compatible this movement is to gen parts in general.
The missing jewel is one of the three defining the driving wheel's position, while its intended purpose is to set the driving wheel's end shake. So the lower jewel in the genuine barrel bridge is not designed to give the driving wheel the correct end shake alone. It would have too much axial play, if you remove the jewel, that's also missing in vrf's movement.
The kind of construction Rolex chose is very unusual, but works.
To answer the question if and how well gen parts fit is next to impossible from my desk and can only be answered by testing it, but I am almost certain a gen driving wheel on a stock vrf 3135 will not fit properly. A solution could be to install a genuine lower auto winding bridge (usually makes more sense to install the complete auto winding module at that point) and genuine barrel bridge, if these parts fit.