So after MUCH ado, and much waiting, my Pebble finally arrived, about a week ago. I was in the first 1/5th or so of backers on Kickstarter, and I ordered black, so I lucked into a fairly early delivery. My only disappointment here is that the item was delivered sometime between a Friday afternoon and Sunday -- I happened to notice the small package on my porch returning from grocery shopping Sunday morning -- and shipping notification from Pebble showed up 24+ hours later, on Monday. I'm just happy it didn't disappear, or get soaked in rain or snow. It did manage to show up a bit dirty/greasy however, needing to be wiped with a rag when I pulled it out of otherwise clean packaging.
My seven-day impression remains about the same as my 24-hour impression. It's a nice toy, it brings out my childhood Dick Tracy gadget dreams, and I eagerly await availability of the SDK so I can put my own apps on it. It's convenient while driving, and in meetings. It's a security bonus when you're traveling public transportation and have to worry about thieves snatching cell phones out of hands.
The E-Paper screen is pretty quick and responsive, but definitely has an oily sheen at some not overly aggressive viewing angles. It's also very prone to glare, and to fingerprinting and smudging. So far, no scratches, but I have yet to pull my typical clumsy wrist-smack in a doorway that I manage to pull almost every time I'm wearing a watch.
Battery life seems pretty impressive. Not impressed with the waterproof magnetic mechanism for the charging cord, however -- it falls out if you look at it funny, much less try to move the watch around on your desk while it's charging.
I would recommend this to geek friends, but I'm guessing most iPhone types will be happier awaiting the inevitably more expensive smartwatch that Apple is rumoring.