In the winter I wear rain gear, so I change when I get to work. The other 3 months of the year I wear shorts, and also have to change when I get to work. When I ride my motorcycle I change when I get to work, and when I was going running after work I needed to change before leaving. They are used to me using their bathrooms as locker rooms. Enough of the others are athletes (runners, mostly) that they do it too.