I love these basses, although sadly I've never played one - although I have seen Geezer Butler and Roger Glover using them from several feet away 😁
I remember reading about them in Bassist magazine when I was just starting out and loving the look. I remember the Vigier ad featured a beautiful teal green with mirror scratchplate. Why they dropped the scratchplate is a bit of a headscratcher, it looks far more graceful with it.
Another thing I remember is the references to a Rickenbacker-esque sound, in both the Roger Glover interview and the Bassist review, but I've never heard the similarly myself.
@ped - any chance of some sound clips?