The BOOX Palma has a lot going for it. It is light, pocketable and offers a genuine e-ink experience.
Android powers it so you can do a lot on the tablet and it could represent a halfway-house between your phone and your current eReader.
The main problem is that it is likely to close to both and so may not have a space to fill. A stylus would help a lot and so would some transparency regarding how private your data is. I have asked Boox in the past and they would not answer with any clarity aside from quick marketing. That alone is a dealbreaker for me.