Hey, I did it this morning biking to work as a practical choice. Needed to wear a suit, can't wear a long overcoat on a bike, and don't have a jacket anymore since I got too big for my last one last year. A new jacket is on the way but hasn't arrived yet, so it was either the puffy vest over a suit or a hoodie under the suit jacket.
And of course I had to crash into another bike on the way to work, but I remained standing while the other guy fell down so I'd say that's a good way to start the day!