As someone who hits the "b" key with their right hand when typing, I find it encouraging that they're splitting that off to the right side, as the vast majority of "ergonomic" keyboards put it on the left side, as the home row method of typing instruction recommends.
(I learned my non-standard method of touch typing playing MUD's via telnet in the mid-nineties)
The split keyboards themselves feel completely unnatural to me, because I press the middle keys differently, depending on what letters are immediately preceding the key in question. For example, when typing "keyboard", I type 'y' with my right hand, whereas while typing "completely, I type 'y' with my left hand. In both cases, it means that I don't need to stretch my hands as much.
If an ergonomic keyboard does not include duplication of the middle keys, it adds quite a bit of confusion when I reach for a key that isn't there.
Actually 'b' is at a completely wrong position( on a ordinary keyboard ). It is inaccessible for both hand, without moving your wrist which causes strain.
I have globally remapped 'b' to the right of 'l'. It feels much better. The old 'b' key is now unused.
Maybe I misunderstand but how can being forced to move your wrist cause strain? Your wrist moves all the time in day to day activities.
If anything I would think keeping your wrist in the same position too long would cause strain, especially if it's unrelaxed.
Even in piano, if you have to play the same notes many times, you are supposed to move your wrist slightly so you aren't doing the same movement each time to prevent injury.
(I learned my non-standard method of touch typing playing MUD's via telnet in the mid-nineties)