My solution is to use 2 bib shorts-- one for the morning, one for the evening. The morning bib short is stuffed into a plastic bag, and the other one is fresh and clean for the commute home.

I hang my jersey in my cube. I use wool jerseys from ibex. The sweat does _not_ smell on wool and dries fairly quickly. I kid you not, there are good reasons to use wool jerseys. People don't believe this until they see (smell) it. By the afternoon, the jersey is totally dry and not funky at all.

The drawback is that I have to carry my extra bib shorts in a bag or backpack. No big deal since I have to periodically carry office clothing anyway.