Thanks everyone!
Ayobeckah, I tested the first marks to see how much leeway I'd have if I made a mistake - and nothing I could think of would remove the ink, so I haven't put a coating over the shoes. I think when Sharpie says 'permanent' they really mean it!
Ayobeckah, I tested the first marks to see how much leeway I'd have if I made a mistake - and nothing I could think of would remove the ink, so I haven't put a coating over the shoes. I think when Sharpie says 'permanent' they really mean it!