IMO, that is a really interesting keyboard. Its about the size of the TKL (width wise) and has cherry mx brown switches (which i like). I really like where the page / line control and arrow clusters are. The built in numpad is also nice.
Still trying to figure out if I would have a hard time with that layout. I think the hardest thing to adjust to would be the delete, tab and backspace keys that would be the most difficult to get used to. I know I am just hardwired to hit those keys in those specific areas of the keyboard.
I would be interested to know what other people think of this keyboard. Does anyone even own it? It looks like it would only be possible to get this in abs keycaps too.