That's a great article Ali, thanks for posting it.
I particularly liked the part about no-carb / low-carb athletes not hitting the wall during endurance events. That's exactly what I've found also, but there is nothing in the sports journals about it.
When you stop and think about it of course, it makes perfect sense. The body can store very few calories as glucose or glycogen, so that supply inevitably runs out just when you need it most.
Fat however can supply tens of thousands of calories from the resources stashed around the body, so that energy source, if the body is trained to use it, will supply abundant fuel for almost any endurance event.
All the best,
fergus