No i don't think so.
I would be happy if connections could be done using a computer keyboard and for example type a letter for a output and a input to make a connection. Without using cables.
If it was possible to assign CC numbers to inputs and outputs, then i suppose any controllers in generel could be used.
And a controller that use cables could be done, but would be more exspensive to use, and in reallity i guess it would be a sort of hidden buttons anyway.
If a controller don't have the same GUI as the software, then you don't get the authentic feel, even if you are using cables.
A dedicated controller for Buchla V does'nt exist unless someone have build one for them self - i assume.