My brother in law is following this kind of diet exactly and has lost 70 lbs in a few months. He had a LOT to lose, however, and still has a long way to go to get to a healthy weight.
Remember the "Pop Shoppe" chain that came and went with their own generic favors? Loved it but never liked riding my bike with 10 or more pop bottles. There was a broken glass trail for a mile. Usually made it home with 7 and my mom would blame me for drinking them.....I should have thought of that after the second ass whoopin....