It isn't up to snuff for reading Comic Books or Graphic Novels, and it's worse experience than a good Non-Color E-ink display. Which is saying it's worse for the vast vast majority of books you will read.
I'm not sure why it exists other than it has to - in order for a better version to eventually come out. R&D isn't free.
I have the Boox Onyx Note 3c. Its a color e-ink and its okay for comics. But I mainly use it for note taking. The colors are helpful for more detailed notes. The eink display makes it easier in my eyes especially for long days of note taking.
Yeah. The color definitely isn't a replacement for an actual comic or graphic novel. It's good enough to give you an idea of what it should look like. And I agree. If you have no need for the color, then black and white is going to be much better.
I prefer to keep my notes as handwritten (I draw a lot of diagrams and graphs in my notes). But it does indeed convert my handwriting to type if I want it to. And it does a great job of it especially with how messy my handwriting can be.
The feel of it is very comfortable too (feels like writing on paper). I used to use a Surface Book in tablet mode for notes, but wanted to get away from Microsoft. The screen of the Note 3C isn't smooth, it's textured like paper
Their note app takes some getting used to, but it works pretty well (templates are a little tricky, but they just made an update to improve it).
The only thing I really miss from OneNote on the Surface was printing PDFs into OneNote. That said, you can annotate directly onto PDFs, it just makes things a little less organized unless you use the PDF as a template.