Not quite the same thing, but you can build a similar thing to run linux relatively easily, and the keyboards can be really good that way. You can swap out the SBC for one of your choice eg. https://www.lattepanda.com/lattepanda-iota (why don't AMD do small SBCs?) and cut a space on the left/right hand side for a trackpoint/optical trackpad (operate from the side)

https://github.com/penk/penkesu