My suggestion is to eat whole foods only during induction. Yes, Atkins sells muffins and bars and shakes and goddess knows what else, but Dr. Atkins, got to love him, is in this to make money. He would only be able to make money from his books, if it wasn't for all these products he sells. I'm not opposed to anyone making money, but I am opposed to his giving conflicting messages.
Do induction by the book. After that, if you want venture into the land of low carb substitution products. Most of them taste like sawdust anyway, LOL.