I bought a Boox despite not trusting the OS - and never getting online with it - because I like to sketch in color. I would've rather bought any other platform,

I bought a Boox despite not trusting the OS - and never getting online with it - because I like to sketch in color. I would've rather bought any other platform, if there was one with sort-of-useful color e-ink. But I actually really like their interface. It's one of the best overlay-interfaces I've ever seen over anything (and this is over full Android, slightly bent). It's a pleasure to use, as long as you keep it airgapped and don't trust it further than you could throw it.