I wouldn't worry about authenticity. The test your friend ran is certainly not a well known or established test of authenticity, whereas there are plenty that are time-tested and proven, and there is no data on those tests. I've bought from Jomashop and trust them. As horrible as sellers of fakes are, it's just as horrible (if not more) to accuse a seller falsely.
bagfreak, you clearly have not accused anyone and your post is thoughtful and caring, so this is not directed at you. My comment is only intended to calm the worries of people waiting for shipments from Jomashop. There are many ways to tell a fake from an authentic, and the method bagfreak's friend used is not a reliable one, and no other evidence of fakeness is cited. Since we have no evidence (and without offending anyone, the buyer's pronouncement of fakeness is unconvincing), and the existing evidence that Jomashop sells authentic, I wouldn't write Jomashop off. At this point, I don't even see any basis for assuming that fakes mix in with authentics in Jomashop's inventory. We have seen nothing to support that. It remains a possibility, but I'll believe it only when I see it.