Possible Clues:

• Never one's sole support
• Tilts to one side
• They are not good enough in America to be one's sole support
• Blackguards in shoes?
• These may be cooled
• Dastardly types in lists
• Not the sole sort of things one puts one's foot down over
• Going on foot, they twist at last
• Items of dressy attire
• Sounds as if it gets better for them to go on foot