I have read a few of the topics about the keyboard layouts, and the Disability access thread, and I was wondering if you had considered having a single-hand layout for people that cannot use more than one hand, or efficiencistas/gamers that want to have one hand on the mouse/trackpad at all time.
I know of the existence of the matias halfkeyboard ($595), http://matias.ca/halfkeyboard/ which has a layout that is very similar to your keyblades.
I was thinking you guys could do something more ambidextrous, given that the left and right keyblades look independent (e.g. have a left hand only layout and a right hand only layout) allowing to use a _ \ _ or _ /_ combinaison of key+space blades (instead of having both keyblades connected). But maybe you already map too many characters to each key location?
Both of my hands work fine so right now I am not a target user for this functionality, but maybe It might broaden the appeal of your keyboard.
Anyway, I can't wait to type on my textblade.