Curious about the weight of X210--couldn't find it mentioned anywhere. I'm guessing such a feature-packed device must greatly compromise on the portability factor.
Probably works out a tad lighter than the X200 with whichever battery the user decides to use. The unmodified X220 I'm writing this on weighs 1.6 kg with the 'stick out' battery and I recollect that my old X200 was about the same.