My biggest gripe with it originally was that the next and previous page gestures worked perhaps one in three attempts, which has been fixed in the most recent software that reduced the perceived latency of everything dramatically. Beyond that it’s a weird experience, it’s sort of usable with open source tools but requires a lot of hacks to not have it sync with their cloud offering if you want privacy. Even if you use their cloud services it often feels a bit clunky and half considered where buttons and controls end up being.
I love the hardware, it’s an amazing looking screen, it feels ultra premium, the folio cases people have made for it fit perfectly in my bag.