I doubt it is anything to do with the hone or a strop. When you think about it and how you move the razor over the hone (or strop) it would be a unique thing indeed to impart markings parallel to the edge like that! :)
IMO the balance of probability lies with the steel, but I have no idea what that might be sorry. Someone like Mike Blue or Bruno or Spazola etc might have an explanation (assuming it is about the steel, of course).
James.