can you find an overhang or anything to park it under? my old work had a narrow run of trees lining the back lot which actually kept the rain off my bike unless it was really windy and stormy.
IMO no bike is too nice to commute on. but the nicer it is I'd want a more secure and sheltered spot to leave it...
I commuted for two years on a bikes direct fixed gear as my only bike. pretty much maintenance free which was nice. but it would have been nice to have a back up on those mornings where I was running late only to find my tire had gone flat over night.