While I like the design and Idea behind this My biggest Peeve with it is that it supposedly it is 3G only, i.e. No WiFi.
Now I don't know about you, but While I like the ability to connect anywhere, via 3G, the fastest connection I can usually get is via Wifi, especially in build up areas.
I'm more keen for its Bigger brother, the U1 that was also announced at the same time. It's a hybrid with Windows 7, but a detachable screen which has the same guts as the Skylight. With a reported 8-10 Hours of battery life in laptop mode, and 6-8 in slate mode, It looks like a more interesting and versatile device.
JKOnTheRun Had a nice detailed hands on with all the new devices
Here, (Unfortunately the video is not embeddable here) and Rev3 Also had a close look.