I went to the roadshow and try both notebooks, I feel the X1 Carbon keyboard is better typing feeling!
X1 is much lighter but the battery may die out after couple of years working, it seem not easy to replace it due to its design! (unless your warranty is still covered) (my X200 battery all die after 3~4 years, I can only connect it to AC or need to buy a 2nd hand battery from Taobao)
And, X1 don't come w/ VGA port or LAN port, you will need to buy an external one @ 4~500 HKD! :(
For T460s, I guess it is still possible to replace battery via Taobao parts.
If you plan to bring the notebook everyday and don't mind if the battery might not work well after couple of years, maybe, X1 could be a good choice!
BTW, 大專notebook still available? I thought they were finished!