I think it is a sleek design and it would be fun to put it through its paces. Just looking at it makes me want to touch it.
I do however wonder if aesthetics took front seat ahead of ergonomics. Specifically, I question the location and orientation of the center thumb wheels as well as the thumb buttons position. Also, while he already has vertical columns, it seems like staggering them would be an easy and major improvement. I understand and like the hinged split and think it is a great feature. Unfortunately, that seems to do more than anything to hurt its look. It looks as if someone stole a slice out of the pie when our heads were turned.
I make these initial comments realizing that, having never tried it, some of my ergo concerns may not be valid. If I ever try it out and like it, I'll be the first to admit my error.