I was just curious if any of you use the army surplus style 2 qt canteen for your hot water bottle (http://www.joesarmynavyonline.com/se...Detail?no=7774 one like this). It is a softer material so I wondered about melting or leaking with some near boiling water in it.

I just think this seems like a great idea because of the insulated bag this comes with would be great for keeping it warmer throughout the night and not losing the heat as quickly as say a nalgene.