Originally Posted by jonesing
There's a thread
here that has some good footwear suggestions.
Zappos.com as a section for metal-free/airport-friendly shoes
here A guy down the hall highly recommends the
Keen Portsmouth for traveling and casual to business casual (ie non-uniform) dress.
Those might not have metal, but a lot of those appear to have soles > 1" thickness. So especially at shoe carnival airports, they might try to make you take them off.