S_D, It's the only reason some of us need the larger packs. We hate to leave any of our little friends behind.

Seems like I can pack everything else in the same amount of time it takes me to pick out what tackle I'm going to take.

M_T, I know I can get a week out of a small canister when I just boil ~1 liter of water in the morning for coffee and oatmeal, and 2 cups of water in the evening for a FD meal. That's no simmering, just bringing to boil, and that's about the max one small canister will do in my experience.
Of course you'll take more fuel than you'll need (a small canister will nest inside the mug for insurance). Plus wood is always available.