This was a fascinating article. The first thing that jumped out at me when I reached the end was "there's no way this would ever work." I am a Swype user and love the product, but I'm reasonably fast at typing on it because I know the QWERTY layout like the back of my hand. Switching to a new layout would bring me back to a crawl. I'd probably be better off typing on a 9-digit pre-smartphone keypad at that point. Coo…
But people who are only now getting into tech (and kids) can learn this layout as a first layout. Within a generation, it's possible to have people using entirely this ultra-efficient keyboard.
IMHO, the only downside, is that it does not take into consideration non-english. I use the same keyboard for English/Spanish, but I suspect that the new layout will not perform equally well on all latin-derived languages that currently use the same qwerty layout.