Setting up the Raspberry Pi was straightforward, though the NOOBS operating system installer gives a choice between Full, Normal, and Lite Raspberry Pi OS with no real explanation as to what the difference was. And it appears to be very hard to find out what the difference actually is – in the end I tracked down the stage package files in the image generation repository and decided upon Lite for now. [Aside: RISC OS is also in the list! Aww, memories.] More here.
I really do like the thought of e-ink everywhere. I would use an e-ink tablet, laptop, phone and whatever else I could get. It just makes perfect sense to me.