I can't disagree with you, these haven't gone out into the wild yet - but I will say I've seen some truly gifted piano players / keyboardists take to this without any mention of strange finger/hand issues with the layout.

I'll be honest, I'm not a keyboard player. I designed this to be truly mobile and portable without making compromises on the key size, which my theory is that having a full scale keyboard is more important than the traditional design of the keys. The former makes the device useful, and the later makes it familiar but also prevents it from being very portable without shrinking the keys or otherwise compromising on other dimensions.

I've seen people shred on Keys, it's pretty awesome to see, since I can barely play Yankee Doodle - but I'm getting a lot better!