Yeah the upgrade policy at my work kicked in and they tried to give me one of these... instead I got a Thinkpad X1 Extreme and put Linux on it. No regrets.
I'm curious to hear about your experience with the X1 Extreme. My current employer has an equipment stipend that's the exact cost of a maxed out 15" macbook, I'd rather get the Thinkpad, a nice monitor and go to a conference.