I get through a full day even with the display always on. One thing that really bugged me with the old Sony was that you had to touch the watch to activate the display, which really limits its functionality as a watch, in my opinion. The muted display option in Android Wear does the job for me, while still giving me acceptable battery life.
Wireless charging would be much nicer, but I guess that’s what you get for buying the cheapest Android Wear watch. I don’t think it’s particularly likely to break with sensible handling, and it lives by my bed, so there's not much risk of it going astray. (Given that I get comfortably through a full day, I don’t need to take the adapter to work for top-ups - but I might pick up a spare one anyway, just in case …)
I’m looking forward to seeing what new features and apps get added over the next few months.