I was watching a video this morning (a Austrian female backpacker/survivalist that I recently subscribed to:
http://www.youtube.com/watch?v=o8YspBOujTQ&feature=g-all-s ) Note: the gals on ETS might be especially encouraged to see some good advice from the female persuassion, she has about 27 outdoors videos.
She's got a pretty good kit but one thing stood out at the end of the video was that she was carrying a powder coated stainless steel, wide mouth water bottle. As a water bottle it is a very nice item but when she mentioned it was SS instead of alumimum my ears perked. Durability wise it would do well and could double as a emergency boiling pot.
It also has a double screw on top. The wide mouth unscrews so that one can access the container and make it easy to clean but then it also has a snaller screw-top that makes it easier to use for drinking.
New and made by Primus - I'm not sure if it is available on this side of the pond yet, perhaps just Europe? At 185 gr for a 1-litre container, it isn't ultra light either but then again you can substitute the aluminum version to save 36 gr. It is similar in weight to the traditional Nalgene plastic bottles but since it is metal, it can be used to heat water too.
http://www.primus.eu/templates/pages/ProductSheet.aspx?ItemId=93988