I use to sell in person until someone tried to rob me at knife point. The sad thing is I limited myself to only 1 BTC sells at a time to avoid someone stealing large amount of coin. I thought at a lower amount, a person wouldn't bother trying to do something like that. Sadly that situation has led me to no longer sell face to face.
I used to sell in person until homeland security robbed me for a large amount of cash and bitcoins at gun point. The sad thing is I was just doing it as a hobby to support Bitcoin. I thought homeland security had more important things to do than bother someone promoting Bitcoin as a hobby. Sadly the threat of five years in prison has led me to no longer sell face to face.