The writing experience is good. I use it for largely bullet journaling of things I need to do. It works well, but honestly a paper notebook would work nearly as well. I had hoped to get nebulous other benefits, I'm not exactly sure what, but maybe exporting or templates or viewing from multiple locations. But the software is fairly slow and fairly minimalistic.
Honestly: It's an e-reader with minimal pen functionality. What it has over a notebook is: It lays flat, and it's easy to erase. I do use it every business day.
Downsides: Page flipping is maddeningly slow, and the pencil is $50 if I lose it, and $1 nearly every time I drop it (replacing the nib). I've had a number of close calls where I thought I lost it and didn't look forward to the cost of replacement.
I'm amazingly close to selling it on ebay and replacing it with either a notebook and pen, a Boox Note Air 3 (non-color). I hear ReMarkable is coming out with a new one soon too.