I don't have an office, I'm not actually working either. But when we have morning report, or noon lectures in our conference hall, you can bet that just about all of us that wear "ugly shoes" takes them off to give our feet a rest. They're easy to just slip those shoes off and back on, it's fabulous. We're on our feet all day, they get tired. Heck, even our attending physician does it while she's writing notes at the nurses station, she'll take her shoes off and rest her feet on top of the shoes (hospital floors are too gross to actually put your feet on them).