I was not able to use this thing comfortably. I think my handwriting style might not be optimal for it, as too small details and tight loops seemed to disappear on me. My handwriting is pretty small to begin with, and only gets tinier with subscripts and tiny details in mathematical writing.

There was also a slight input delay that I found annoying. I love writing on paper, and so if the experience is significantly inferior I won't be sold. I totally disagree with the author's claim that this thing provides a superior writing experience, unless they've improved on their designs and it now actually does feel like paper.

I would instead highly recommend a much cheaper, though dumber, yet far superior LCD-slate (like one of these: https://www.aliexpress.com/w/wholesale-howshow-lcd-writing-t...). The writing is instant, and even the tightest loops and smallest details will show up as if on paper (though green-on-black). When I was in university, I would use this for sketches in discussions, rough calculations and drafts, and saved a ton of paper that I would otherwise just have thrown away.

The fact that it wouldn't let me save stuff or share my drawings didn't bother me at all. Worst case scenario, I'd just take a picture of it.