Buddy at work just grabbed one; we tinkered with it here in the office for about 15 minutes.
My feelings on health bands: Neat if you're actually going to utilize it to try to get in shape. not very comfortable and limited appeal if you don't exercise regularly.
My feelings on smart watches: The Moto 360 is the ONLY smartwatch out there that looks "good." I've tried one on, it's comfortable, and it looks normal. But man, the OS is slow, the screen isn't nearly as good as it should be, and the interface is "okay." The Apple Watch has a GREAT looking OS, hopefully the screen is really solid, and I think it'll take off... but why oh why did the screen have to be square?
My feelings on regular watches: Love 'em. Not a huge hobby of mine, but I'm a member on WatchUSeek, know the differences between different movements, and can rattle off some nice brands. I have six or seven different watches in my rotation - mostly $200-$400 Citizens and Seikos. Looking to get a Hamilton in the next year or so; would love an Omega some day. I wear them to complete my look more than anything. They last forever.
***
"Meh."
The thing is thick and uncomfortable. The band has almost zero play. The screen, if sitting under your wrist, will just knock into things. If above your wrist, it looks a bit silly... because the screen is so wide/long, it has little gaps between your skin and the band. Out of all my watches, all of them sit 90% flush to my skin, at least.
The screen is serviceable. Won't wow anyone. Imagine circa 2006 smartphones. Low res, pretty bad contrast... nothing is super sharp... but it's 100% usable - no issues with usability.
Interface is okay. It's the standard swipe left/right to go through things.... click on items to enter app. There's a little blue arrow on left side of all apps to go back.
Took about five minutes to find the app on the Windows Phone store. Can't seem to figure out Cortana.
You can only have ten "apps" on the band at any one time.
Only two auto-replies... surely there's a way to add more. There's only "I'll call you back" or "I'm in a meeting." No "what's up" or "busy" or whatever. Gotta say, Apple's contextual replies sound really great.
Things are a bit sluggish. Not buttery smooth. But again, totally servicable.
Build quality is good. Thick rubber. Sturdy. A bit heavy. The clasp is neat.
Closing thoughts on 15 minutes of impressions? Probably a pretty good exercise band, if a bit uncomfortable. Better than most. But it's nothing incredible. Not a showstopper. Not a game changer. It's a decent little FitBit upgrade. For $200, it's not a bad deal. But it's absolutely not a must-own. That said, I don't think MS is even trying to sell it as such.
A good exercise/health tracker. But nothing remarkable.