How do the City and Work compare in terms of their fit when carried over the shoulder (using handles, not strap on the City)? Is one more snug than the other? I'm trying to decide between these two models, and I plan to carry on the shoulder. I don't mind a snug fit under the arm, but just curious if City & Work feel any different when carried. I've looked at the modeling pics you've all posted and can't tell the difference. Please help!