Erik, your actually saying that 10k calories of 30 percent protein and minimal/no carbs...a person wouldnt get fat? Come on now...
The human body is made of ingested proteins and fats. Carbs only provide energy, from glucose, if it is used immediately, some glycogen storage, and the rest is stored as body fat. Fats and proteins are what builds and repairs everything in your body. Fats and proteins are useful. Carbs aren't useful. The body works fine using fat for fuel. You don't need to eat carbs. That's why there are NO essential carbohydrates, only essential fatty acids (fats), and essential amino acids (proteins). Eating an extremely low carb diet, means you are only eating the essentials that your body really needs.
The body can only digest, absorb and assimilate only so much fat and protein. So eating a lot of fat (70%), and Protein (30%), won't get you fat, even though your calorie intake is high.