I don't know about the US, but the VOC in UK will have nothing to do with Vincent choppers of any description.
On the whole I can see their point, since the Vin is/was a highly original design which represented state-of-the-art design concepts ( even if the execution was a little contentious, shall we say ) which were in some ways - such as the triangulated rear suspension and underslung, stressed engine-as-frame-member - decades ahead of their time, and was the fastest thing on the road in its day with legendary braking. They also had a long and successful record as sidecar speedway and grasstrack racers. To take such a machine and turn it into a highly subjective styling exercise in which form is subordinated to function, I for one see no point in this whatsoever and much to be said against it.
VOC have accepted them over the years but you can still expect to be less than widely admired for cutting the gearbox off, a change which can't be reversed. Again, from experience they are actually quite rare but highly visible and much-reported when they do appear.
Shoot, a man could have a good weekend in Dallas with all that stuff...