I've actually tested out this keyboard layout but ran into a problem. What I did was take two separate keyboards and tape em together on a board. Unfortunately, both os x and linux didn't play nice with that setup. (No clue about Windows.)The modifier on one keyboard wouldn't affect the other, which made it hard to use extensively. It was typeable, though I imagine it would be similar to having a Kinesis keyboard where any other keyboard just isn't home.