@mattl I've had both the reMarkable 1 and reMarkable 2 since launch (respectively). I use it a *lot*.
Pros: The writing feels better than any other tablet / eReader. I use it to consume PDFs and sketch out / work through problems.
Cons: DRM encumbered ebooks can't be read; you have to strip DRM before uploading them to the reMarkable. CLI tool used to be top notch, but the new API is a bit flaky recently.