"Double Slip Knot" (ABOK 1219 p. 221) is the canonical name with prior art. Calling it [your name] knot is pompous "discovery" of lands already occupied revisionist history. The main problem with it is that the free ends and loops cannot be balanced easily like a standard Bow Knot (ABOK 1214 p. 220). A Bow Knot may also be fixed by adding an opposing Half Knot ("The Shoeclerk's Knot" (ABOK 1215)) while losing the slip feature that the Double Slip Knot retains.

From the site:

  Years later I found out that my new knot was not new and that I had simply re-invented an existing knot, which appears elsewhere under two different names:

  “Double Slip Knot” (#1219) in “The Ashley Book of Knots” by Clifford Ashley;
  “Seaman's Shoelace Knot” (or “Seemännische Schuhbandschleife”), which appears in the German book “Knoten, Spleißen, Takeln” by Erich Sondheim.

I'm pretty sure knot techniques can't be copyrighted, so nobody owns it or has the exclusive right to name it. Someone can call it the Ham Sandwich knot if they want. Who cares?

Besides, I'm pretty sure Ian has done a lot more to spread the knowledge of this particular knot than anyone else in history.