I am toying with the idea of buying a large enamel coated metal mug from the surplus store. My idea is to use it as both a mug and a pot for heating water. It would serve a double purpose. I could hang it on the outside of my pack so as to save some space, and possibly there may be some weight saving too?? Has anyone tried this or is it a dumb idea? Would it perhaps weigh much more than simply taking an aluminum pot and a plastic mug? Thanks.

Howie