Ok, this is for all you scientific folks and us ordinary users. IF you have a small button compass such as the one on the Firesteel tubes, AND have a loop to hold it on your knife sheath, the compass will always point to the knife, right? Ok If this is so, will it have any affect on the compass when removed from any influncing metal, STILL POINT to magnetic North? Seems to me that it should, but will it?