I tried my new Light My Fire Spill-free Cup out today. Rather than take a stove, to save time I opted for hot water in a thermal mug and instant coffee.
The cup was a big success. As I hoped the lid kept the coffee hot, even though the cup/drink has a large surface area. It was comfortable to drink from and hold. I am not sure this cup will replace the plastic beaker I take backpacking but it will make a useful addition to my kit on trips when weight is not such an issue.