But I will say this- the idea of holding a function key to get to the rest of the keyboard buttons is a terrible one. Chording has some purpose, but here it really seems bad. Do you want Alt + Tab to become Alt + Function + tilde?
It depends entirely on what keys we're talking about. Yes, I would much rather hit Ctrl-U/D than PgUp/PgDn, Ctrl-A instead of Home, and plenty of others, because anything outside the alphanumeric can easily end up taking more movement to hit than hitting two keys in the alphanumeric area.
But the real issue I see with the keyboard is that the layout is so nonstandard that finding any third party keycaps will be a total PITA if not impossible, and very few keyboards actually come with good quality caps that won't wear down/shine. It looks like this thing is more expensive than an ErgoDox with very little advantage over it.
Software production is assumed to be a line function, but it is run like a staff function. -- Paul Licker