I know most feel mineral or other oils are a big no-no on helmets, but how about daggers and swords? I've always used Renwax, but have read that the choji oil the Japanese sword guys swear by is basically mineral oil with a few additives. I know mineral oil is recommended on kitchen and working knives by many, but anyone use it one their TR blades? I really can't think of a reason not to use Renwax, but was just curious on others thoughts.