I also commute on a 08' Tricross Expert Double.
It's well suited for commuting to work and for long rides to see family and friends, but definitely not something that I would leave locked up outside. The bike sees about 2 miles of dirt roads/trails and 20 miles of decent roads nearly daily and it has performed like a champ. This bike is perhaps one of the best fitting, most comfortable rides I have owned...more miles were put on this bike in the first month of owning than some of my other bikes have seen in over a year.
I did make a few add-ons to fit my needs:
-Blackburn X6 headlights.
-Roadmorph pump.
-saddle bag...contains: Co2 pump, mulitool, patches, extra tube, and emergency money ($1.25).
*edit: also traded the 45c tires the bike came with for a set of 32c Panaracer Urban Max tires.