It is quite good from a writing perspective. I very much loved the tactile experience of a good fountain pen and nib on robust heavy paper. Remarkable is not that, of course, but a worthy experience in its own right. I am using it at this moment for some creative technical design work.
It is less good from a reviewing and rereading perspective. Even at the finest line width I have to work a little harder to read back through my poor script- something I much less frequently found problematic on paper. And page turning and locating earlier notes in a 20-50 page document (an amount I easily produce weekly, sometimes daily) is much less ergonomic than with paper.
The recognition does not work with my writing, but I can see that improving and that feature becoming killer in the context of more structured document authoring on the Remarkable, like filling out a templated form with gestures or short letter/word notes. They are not far from that capability.
And on the whole I have gotten to a place where the ritual is satisfying and useful. Not perfect, but paper and pen, however enjoyable, were not perfect either.
I have also recently become aware of a product called Papyr, which has two features of interest- a larger writing surface, and live synchronization with other Papyr devices and with software on iPad or desktop. It may be able to be a useful shared whiteboard.