At this conference (IAU XXVI) I'm wearing shoes as I think I orght to look smart. Or at least a little smart (actually I'm very smart with my 'births/marriges/deaths' suit working well for me). But the shoes I have (a kind donation from an old housemate Mike) aren't that comfortable. Even when sitting down with my feet on the floor, the sole of my ankle is in a little pain. Silly really.
But the anoying side affect is that it's now got a little uncomfortable to walk even sans shoes - which I take off as soon as the conference ends in the evening. Still, I'm not letting that hinder me and did a good trek to a not so local super market yesterday getting some excelent strange looks.