DataHands experience

I bought two datahands keyboards, one for my mac and the other for 
the linux/windows machine. I am struggling learning the keys. I am 
dislexic and I find it hard to remember which fingers press which 
keys and that slows me down. I am finding it takes me about an hour a 
key at 25 wpm at 100% accuracy. I normally type at 35 wpm. I am 
hoping the struggle will be worth the effort. I will continue the 
learning exercise after my carpal tunnel and guyons surgery. 

I will say that the datahands keyboard has some polling mechanism 
that polls the system and prevents the screen saver from starting. 
This is a problem because of our security policy of never leaving 
your desk without locking the screen. It is easily solved by 
unplugging the keyboard, but it does get annoying sometimes.