1. yes, it is small and wonderful to one-handed read with, but _everyone_ around you notices you have a unique, small ereader in your palm. granted, maybe just reflects my self-consciousness. but until these are more ubiquitous, you'll be getting looks on the train/plane.
2. the whole "stick it on the back of your phone" idea is super silly and a bit of a gimmick at least:
2a. I don't want to make my expensive phone larger by volume and weight
2b. I do struggle to not fool around with my phone, and simply using "the back of the phone" is about the equivalent of being given a cigarette upside down as if that will stop me from smoking it.
3. after 14 years of Kindles, it's obvious how much better the eink tech is in premium devices (not a game changer at all, at most a nitpick)
yeah it's a super great device. I got it when prices were a bit lower a few months ago and it was a no-brainer. if you're really into reading and being thrifty/resourceful to get your ebooks, I'd check it out.