I bought an RM1 and was ultimately highly disappointed in the software, and, for all its supposed openness, the lack of any open software development.

They sold me a tablet they touted as having hundreds of pressure levels and most of the simulated writing implements only recognize about 4.

My biggest complaint is that I hoped to be able to use it to make sketches and diagrams I could use on websites or art projects, or do live drawings like it was a digital version of an overhead projector. It works like garbage for both use cases because the software ecosystem has no support at all for anything but the ultra-low-quality stroking algorithms that are used on-device. Put those pen strokes that looked so beautiful on e-ink up on a 4k monitor and they just look like the cheapest of cheap garbage because there's no pressure interpolation at all...!!!