I'll go ahead and do my first post, then.
My understanding of biochemistry is shaky on the best of days, but from what I can tell it sounds like Ferriss did his homework on most techniques he mentions in his book. I semi-started the slow-carb diet on Wednesday, and more fully tried it today.
I stuck to eggs, beans, salmon, and steamed veggies all day, and I included the light workouts pre-meal that he recommends. I know I'm barely scratching the surface of the book, but I figure that I can start with the bare minimum the first week or so and see where it goes.