A Warr guitar? I haven't seen one with that body shape, but they're played like a Chapman Stick. Trey Gunn, formerly with King Crimson, played them. Warr Guitars on myspace - with audio clips Trey Gunn on myspace, with audio and video of him playing Warr Guitars
You need to watch the video clip of him tracking a solo with one of these. It sounds at first like there's a pitch shifter effect on it, but I think he's actually tracking the second part of a solo where two of these things play in harmony. Pretty freaky.
For me it's not that they have too many strings. It's that it's a completely different instrument than the guitar. Different techniques, and I've seen guys play pieces where they play bass, chords and melody on them all at the same time, like on a piano. I don't have enough time on my hands to practice the 6 string guitar so that I'm able to play it as well as I want to. I certainly haven't got time to become a multi-instrumentalist, though it would be cool.
I think the concept is cool and have seen it applied well in other instruments, but the boat paddle-sized headstock sporting no less than 12 full-sized bass tuners looks absolutely idiotic.
I'm not sure I see the point. It's like combining two guitarists into one?
Why not just use a pedal or, even more crazy, another guitarist? Instead of learning to play that crazy piece of kit.