That's a lot of work. Just reverse the first foldover you make from the direction you were taught as a kid, but do everything else the same (i.e., square knot). If the bow ends up perfectly horizontal to your foot, then you did it right, and it likely won't come undone.

Ian's has it's place in like camping and hiking and such, but for everyday use, it wastes precious seconds and you have to have the dexterity of a surgeon to pull it off efficiently.