It's too heavy for me to even consider it. At 2.2 pounds it weighs twice as much as the home made pack that I would be connecting it to.

A simple bag can be hung from the top of your pack frame or from your shoulder straps with just a little do-it-yourself effort. You should easily be able to hang a bag with twice the volume of the syncpack (only 400 cubic inches) and keep the weight well under a half pound.