I'm wearing mine for a few weeks now, but it's been rather unstable for me. BTLE disconnects are common, and I'm not sure what the source of the problem might be. Also, it sometimes freezes in an infinite loop and drains battery really quickly when that happens.

These are all problems fixable with software updates, and it's very early stages of the project. The app store grew from 80 to 130 apps in the last 3 weeks.

The hardware on the other hand is great. It doesn't feel cheap, but it's really lightweight, which I enjoy. The e-ink display is crisp and clear, easily readable in direct sunlight, and it has 8 colors, which is a cool feature for an e-ink display.

Didn't get my hands dirty with the SDK yet, but will hopefully find some time during the holidays. It looks well thought out though, and the web IDE and emulator seem useful.

Really looking forward to dig into it.