Okay, so Vai just answered my question of whether he would actually play this thing or if it was some sort of stunt. Of course this was posted on April Fool's Day, just sayin'. I hope he didn't throw his back out!
Two of the necks are partially fretless .Alien vs. Predator, steampunk, baroque, or hipppie chique....and what's with the fret layout! WTF?!
Somehow he still makes music with the thing.
https://ibanez.fandom.com/wiki/SRAS7Two of the necks are partially fretless .
Ibanez actually has (had?) a production model bass like that, too.
That's the one!