Usually when I see one at the track, it's being worked on.
They are cool bikes. 10 years ago that we're probably the sexiest bike on the planet. In my opinion, they look a little more dated now. Builders like Ducati, Aprilia, KTM, and BMW produce bikes that look much cooler I think.
The MV was my dream bike growing up, but now I think it's the KTM RC8. :-)