I just picked up the Sport with a triple. 2008 model.
Weight isn't too much of a concern for a commuter bike for me. It's lighter than what I had before! I put a Topeak shell bag on front for ID badge / phone / keys. Also a rack on the back. I have Dinotte lights front and back.
This has tiagra. The shifting isn't as fast or neat as my 105, but i'm slowly adjusting them closer!
I like the bike, the ride, even with the 32's it came with, it rolls well.