I wore them when I worked in an office full of town planners. I had daily site visits around the countryside, so it was ok.
I wear them at the mine site in the office too. But I also wear steel cap office shoes and a polo shirt ... or shecksy hi-vis outfits with hard hats sometimes too.
I think it depends on the corporate setting. I think most offices it's a casual Friday thing unless it is more relaxed or creative. If in doubt, assume its not ok and then take the lead from those in the office.