My rocky first 24 hours with the Apple watch
medium.com
medium.com
I checked them out at the Apple store and wasn't impressed with v1 (seemed to require too much interaction; I think watches need to be more passive) but I'm willing to bet they're going to sell a lot of them, v1 will be hugely improved with updates and v2 will be really good.
Though if the rumors are true that Android Wear is coming to iOS I'm really curious how this market will shake out.