Your right. It is a poor idea in most situations to eat so little on a daily basis. However, never will the body call on protein as a greater substrate for energy demands than it does lipids. The ratio of muscle to fat loss may be greater than it would on a more reasonable deficient, but, never does it exceed fat use.

The real danger to extreme skeletal muscle protein catabolism becomes more likely with longer term dieting(4-5weeks+). The starting muscle loss is generally only around 3-5%. It can increase in later weeks/months upwards of 10%-20%, though. Large deficients, little physical activity, and poor diets are what allow this percentage to skyrocket.

Just a helpful FYI, Trev.

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Not believing in evolution is on par with still believing the world is flat.