I'm honestly not trying to take anything away from Ian, but he didn't "invent" the "Ian knot", just renamed the handcuff knot: http://www.animatedknots.com/handcuff/
>>wspeir+(OP)
You should take a closer look. The so-called "Ian knot" is not a distinct knot; it is just a different way of tying the standard bowknot. It is definitely not the handcuff knot.