Earlier quoted context omitted.
For writing, have you checked out the remarkable? ( https://news.ycombinator.com/item?id=24295443 ) It's an e-ink display with paper like friction and if you really want to, you can shell into the linux system it runs on.
I’m not the op, but I am a “pen based note taking enthusiast“. I have owned both a gen 1 remarkable, and an older iPad Pro. In my opinion, the remarkable is garbage in comparison. The note taking app is just so far behind. And cross platform seems it’s never going to happen. My note taking app of choice is always: write, by stylus labs. It’s wonderful, and really expresses what I hoped pen based writing would always…
Make no mistake. Their stuff is great. But I'm not buying something they tell me is for early adopters unless I want to write code for it and use JTAG to load that code, possibly with a handbuilt wiring harness.