a sheppard tent stake that doubles in the making of a wood burning stove, and to dig a cathole as well as brushing teeth with a tip attachment, or a Q-tip ear pick...
so you can't brush your teeth unless you take down the shelter tent stake.
you can't dig a cat hole until the stake cools off from being used in the stove.
fire heat on a tent stake will weaken durability, unless you plan on rehardening in cold water while still glowing red, like a blacksmith does.
putting that in your mouth for teeth brushing after digging a cathole in the dirt? sure you can rinse it, but in the field that is not the same as sanitize with hot water. you are bound to be getting soil bacteria in your mouth.
I like that versatility in an emergency, but it does not make sense to plan on using it this way on a regular routine, because of the inter-dependency. most of these events regularly happen at the same time. so the tent stake is already in use for one purpose and cannot be concurrently used for another task.