These look like an excellent - albeit pricey - survival tool. Has anyone had any experience with this device? Do they have some sort of lanyard loop? I'm thinking along the lines of hanging this beasty around my neck, utilizing a wire saw/drinking tube combination ala 'Ranger Rick's survival necklace'. I'm assuming the compass and whistle are somehow attached to the rest of the unit when not in use? I'm also assuming that the hidden Bic lighter compartment could just as easily hold a 'Spark-Lite' and some 'Fire Tab' tinder?