Just my 2 cents...

Flying barefoot is marginally better than ladies who fly with nylons & heels. But both, IMHO, are extremely bad ideas.

Call it old habit, but as a pilot I always dress to egress, even if I'm a passenger. I insist my wife also do the same.

In the event of a crash, wouldn't you want your feet protected from *very* sharp shards of metal, pools of corrosive liquids, and fire?