It depends, mainly on a few big factors: how often and how long you plan to leave it locked up, and how long+rough your commute is. Can you park it in a safe place in your office, or will it be locked up on the street? Do the increased comfort and reliability of that bike trump the risk of having it stolen? Can you get along just as well with a much cheaper bike for commuting?

Personally, I only have a ~5.5 mile (each way) commute, and do it on the crappiest generic steel-framed fixed gear bike I could find, so that I don't worry whatsoever about locking it up or beating it up. I'd never leave either of my "nice" bikes locked up out of my sight frequently, or for any extended amount of time. Makes me appreciate my nicer bikes more when I ride them on the weekends or evenings. But, if I had a longer commute, I'd probably invest in a nicer bike (and another lock or two). It all depends on your specific situation and needs.