http://ilbob.blogspot.com/2012/03/packaging-weight.html I did a quick weighing of some canned food versus pouched food. As I suspected, comparable canned food items versus pouched items I just happened to have available to weigh showed there may actually be a weight advantage to the canned foods.
Thanks ILBob. I can see the benefits of both, but when push comes to shove and we have to hoof it, I think I'd give the edge to freeze-dried and dehydrated meals, along with some ready to eat snacks.