cheers, I'll read those later. But I don't think I'll be switching, your body is designed to use carbs for energy (then protein, then fat). Filling yourself with fat when loosing fat just doesn't seem like the greatest idea, and no it isn't because eating fat makes you fat (it doesn't, its excess cals), but they have 9cals per gram, so you are getting alot less food for your cal amounts.

What does a days food actually look like at 55% fat?