I recently got my brother interested in esee knives so he bought a pair of izulas. He gave me one and has been edc the other ever since.. anyway he told me that recently he forgot to leave it in his car before work (he works at a stadium) and realized that his izula didn't set off the metal detector, so he said that he tried it again some other day and same thing happened. does anyone know about this? you think the metal detectors just weren't that good? or are izulas undetectable?