but, them not treating the screen as a display I think significantly limits the utility of this. You have to go through their software to customize the screen, layout, and customizations. Many of us know how hit-and-miss esoteric keyboard software tends to be.
If they stuck to making it an external display managed by the OS, polling the keyboard layout from the OS, and maybe just have their app apply custom functions like emojis and tool graphics I would have some confidence.
They are trying to tie up too much to their software which they will eventually stop supporting, like my DX1 paperweight.