I use two of them for backpacking. The Sawyer (and a number of other) water filters screw onto standard threads, so I can use 1L potable and 1L non-potable when I'm on shorter trips and not using my gravity bag.
I use two of them for backpacking. The Sawyer (and a number of other) water filters screw onto standard threads, so I can use 1L potable and 1L non-potable when I'm on shorter trips and not using my gravity bag.