Cool! I'm eager to see your review of in this context! Would you kindly add a follow-up to this comment and share either your experience in brief or a link to an actual review you would probably write please?
I am using Obsidian as well and I am considering using an Android eInk tablet (Like a Boox), with a keyboard to be able to use Obsidian.
I may give it a try it some day.
[1] https://obsidian.md/