Hmm. This could be a real mess at MCI. The same airport that's home to the Shoe Fetishes has an awkward set-up where each set of 3 gates shares a single glassed-in security area. Once you get through the gates there's not much there except the metal detectors, etc. If everyone made subject to secondary screening because they refused to remove their shoes requested a private search, it could really gum up the works.

Wish I had the brass ovaries to try it.