When I was a kid, there was an ad in a magazine that showed a lady sleeping on a bed, her pretty foot dangling off the side. Thank goodness I have a lady friend who'll recreate that scene for me. There were a lot of ads for sandals and thongs that got ruined due to excessive licking on my part. If the model is a fetishist or knows someone who is, chances are they are aware of the massive ogling their feet will recieve. If the model isn't into feet, the photoshoot is just another day at work, I would imagine.