Some of the gestures for doing things aren't obvious, but seem intuitive once you find them. The hardware is very nice quality, performance seems solid so far. I'm not crazy about the attachable keyboard (they got the touch one, not the type one), but the idea of converting the tablet into a laptop is nice. Haven't tried plugging in a mouse/keyboard yet but I assume it should work fine.
The default metro apps seem nice enough. There are only about a hundred available apps on the store, but more 3rd party apps than I would have expected this soon.