Yes, it does, but the Ian Knot is more reliable, especially in places where you don't have the instant muscle memory like shoelaces. If you learn the standard knot incorrectly it results in you doing a Granny Knot. But if you try to tie the Ian's Knot, you can't tie it incorrectly because it just doesn't work. And of course yes, it's faster.

ETA: Also, OP may have been tying a Granny Knot from time to time which results in shoelaces coming untied very quickly. So the Ian knot gets you both faster tied shoes and shoes that stay tied.