Any information on the longevity of the compound? I've only seen some of the more gushing articles (like the one you posted) that apparently are all written by people never having done the walking on potato-flour (in my neck of the woods) and water trick in science class when they were 12 (nor heard the term Non-Newtonian fluid). It's a neat trick and all, but if the protection degrades then it's of somewhat limited use for consumer applications.