I lost 30lbs in April and have kept it off. We eat 90% NT. I don't always soak my grains for muffins and such because sometimes I like the results and sometimes I don't. We don't eat a ton of fat, but we're not shy. Otherwise I find NT to be a good healthy way to eat. The food is all from scratch and full of nutrition.
The key is the bread, past, potato, starches and sugar intake. Sally does make a statement in her book about fat not being produced from fat, but rather fat being produced from starchy/sugary carbs. She says if you want to loose weight then eliminate them from your diet. If you want to maintain weight then eat them in limited quantities. I totally agree because that's what I had to do.
It's really easy to blame weight gain on the high fat callories of NT eating. However, she does not focus meals around breads and pasta's but rather the opposite. It's a misconception that a high fat diet will cause weight gain.
I also don't go crazy with the fats anyway. Just a healthy moderate amount of fats. Lots of vegetables. Meat at the evening meal. Lots of broth based soups and meals. Fermented dairy (which takes care of the carbs and sugar in the dairy). Fermented vegetables. One serving of sprouted/soaked grains a day. It's a very healthy and balanced way to eat.