That'll work for sure. Those two sets always get compared to one another and for good reason. Did your nesting cup come with a lid? Also, you may want to look at the pathfinder nesting cup and see the little holes drilled around the upper rim. It's meant for a fish mouth spreader and it really makes using the cup in a campfire so much easier.
http://www.selfrelianceoutfitters.com/bottle-hangers-1/
http://www.selfrelianceoutfitters.com/bottle-hangers-1/