Oh good God.... it's something we secretly hoped we'd never see, yet somehow always seemed inevitable. As was the case with snakeboards or, yes, snowblades, someone has taken some perfectly good equipment and thought "let's change it to something a bit crap". As a result, Dual Snowboards are here, and there's a promo video to prove it.
The guy in this clip can do some stuff, but what's apparent the whole way through is that he'd be much more stable (and probably happier) on a normal board. Therefore we can't see anyone actually wanting a pair of these. Still, there's a bright side for the guys behind it: thanks to this thing, Dual Snowboards will never hold the title of Official Stupidest Product in Snowboarding™.