Originally Posted by Dgosche

This. Who cares? Before anyone asks, no it wouldn't bother me if it was my office or house. I routinely sit with my feet on the wall in my office when I'm thinking.

I don't go barefoot in a plane but that's more about protecting my feet than your eyes. As a Floridian I spend 75% of my life without shoes and even more without socks which I only wear when I must. Sometimes a pair of oxfords is required but usually I can get away with loafers or even better my dress flip-flops. I think if you're worried about toe jam you need to clean and air out your feet more.