Not too shabby. The onscreen keyboard sucks ass (worse than the Windows Phone 8 keyboard in every measurable way), and is a little buggy (e.g. typing a single letter into Chrome's URL bar causes it to close for no reason).
The keyboard cover is wonderful, no criticisms. The weight is acceptable. The pen works well but isn't "required" for a good experience (although I am at 200% DPI).
The thing gets worryingly hot (too hot to touch in places) and the fan doesn't kick on for quite a while. High network activity seems to result in excessive heat in particular which is strange (e.g. a 7 GB download in progress generates more heat than full screen YouTube).
Overall I'd likely get one again/recommend it. I just worry that the heat will eventually damage it internally...
PS - You cannot use it on your lap with the kick-stand. Just doesn't work. You can use it on your lap in "tablet mode" fine and the kick-stand works well for tables and similar. The kick-stand is great, but a laptop's rigid hinge is better on your lap/legs.