None of these takes away from the fact that the role of the suit has changed forever. It's what women learned to do with skirts decades ago. Men are learning that there are more directions to dressing than just up or down. This newfound freedom has its consequences. Some in suits still, some in suits with no tie, visiting Americans in Banana Republic, expat Italians in club gear and a few in T shirts and jeans.
Casual wear is a struggle, but the suit is making life outside the office easier.
For instance, a suit is now a common substitute for black tie. Removing the suit from standard daily office wear has also changed its meaning inside the corporate office. To be suit is, for now, to be safe. The suit is still what to wear when you're not sure what to wear. The suit is the closest thing men have to the little black dress.