some companies supply a small foam type humidifier in their travel humis. Cigar caddy uses one, and Cigar Classics provides a small Paradigm humidifier in the Haliburton cases.. Do you use these humidifiers? I have pulled them out of my airtight travel humidors, and just rely on a couple of humidipaks and the cigars themselves to keep the case humidified. Whats your opinion?