Just came back from the Auckland Folk Festival, where I wore socks and sandals all day.
The weather was superb, very hot sunshine. Too hot for shoes.
My feet are untanned, I wear boots to work.
I have had sunburned feet in the past, from wearing sandals on my lily-white plates, and besides the current wisdom of never getting sunburn because of possible future trouble, I couldn't then wear boots for several days, and so couldn't go to work.

As I pointed out way up there, James Bond sustituted sandals for shoes, -'his only concession to the heat'- in Jamaica, so who is the sophisticate who is more stylish than him?