I thought changing shoes at work was strictly a female thing. I walk a mile to work and my selection of work footwear largely consists of high heels, ergo I wear flipflops or sneakers and change into the fancy ones when I get to the office. Pretty common behavior among women.
This morning (after walking past a fire on 19th between S and Swann, complete with nine firetrucks over two blocks) I spotted a guy in a perfectly tailored pinstripe suit. Looked fabulously put together. And what was he wearing on his feet? Beat up tennis shoes. I can’t recall ever noticing the shoe switch phenomenon among men. I assume it was motivated more by concerns over scuffing up the Gucci loafers (just a guess here) than discomfort at walking in them.