That's really cool, I would definitely be interested in a "normal" keyboard that had this kind of layout as a guitar player. Needing to remember different hand shapes to play a major chords took a long time to get used to - would love to be able to just "slide up" the shape like you do on guitar with bar chords.

I'm also primarily a guitar player. I picked up a piano accordion earlier this year, and I'm wondering if I should've gotten a button accordion instead[1]. A linear piano layout is just hard to wrap my head around, hahah. I guess it's probably good to learn, though, so I'll stick with it.

[1] Piano accordion on top, button accordion with isomorphic layout on bottom: https://commons.wikimedia.org/wiki/File:A_converter_free-bas...

The House of the Rising Sun test of the commercial version of this keyboard: https://www.youtube.com/watch?v=IlZv13YZzSM