I know ReMarkable. An employee draws everything by hand a truepaper person. He can send with it only in pdf. Maybe the new ones can be sent in other formats. Sketchup don’t think it works. How are you going to give the commanded.
A Mac version for Ipad is coming soon that could be interesting.
I have an Android tablet with the same kind of e-ink display, but I use it mainly for reading books, sometimes for notes. It has a possibility to save notes as vector PDF files so those could be transferred to design applications but I have not yet bothered with it. I like the e-ink display, it works in a well-lit environment without emitting light itself. The reMarkable device might be a bit limited in application support compared to an Android device or an iPad.