On the Watch - i've only had it for 3/4 days now, so maybe not the most rounded impression. For background, I had zero interest in the Watch until earlier this year - I was actually actively dismissive of it (saw it as unnecessary, not very useful etc...).
Really loving it, just very practical. I only really bought into the idea because I was sold on the running uses for the watch, I think it will really help my exercise and running - but all the little useful things that it does have really made it shine for me. Quickly glancing at texts/notifications is actually quite neat when on the move, other little things like being able to control your music (e.g. in the shower), I also really love the look of my Nike+ version and the faces as well.
Would recommend, but maybe I should come back in a month with more reflections.