Some of the principles are sound, and I have implemented them myself, as well as for several other members on this board in my fasted training protocol. In my approach, though, I tend to focus on the period with the highest availability and recrutiment of IMTGs and FFAs for oxidative metabolism, and tailor my training to most efficiently utilize this availability. This is of course in the morning, after nocturnal lipolysis.
The research on fasted-state training is promising, not only in respects to the availability of oxidative substrates I just mentioned, but also in terms of post-training glycogen resynthesis (in the form of increased expression of glycogen synthase), GLUT4 expression, down-regulation of acetyl-CoA-carboxylase, malonyl-CoA, and the obvious increase in carnitine polmitoyltransferase 1 (the rate-limiting step in the beta-oxidation of fatty acids).
This being said, many of these changes are the result of skeletal muscle contraction-induced AMPk phosphorylation, so it is difficult to say whether or not an "intermittent fasting" period would derive the same benefit as a transient fasted training period.
"My boy is wicked smaat"
LOL.......dur, all that just flew over my head.