I am on week 4 of this diet.
The gist of it is how you eat as much as what. You are meant to sit down and take time to enjoy your food. It's all common sense, really.
So far, I have lost about 6kg. The diet starts with three weeks of low carb, and then re-introduces slowly. I cannot say that I have missed carbs (after sbout day 3 or 4) so have not bothered now that I am allowed.
What I really like about this diet is that it has introduced me to completely new foods, so out of the rut of four or five main dishes. They are all suitable for the whole family (as larger portions or adding carbs), and the recipes are quick and easy.
I have really enjoyed and valued reading mumsnet threads, especially the low carb ones. I am really motivated by reading the experiences of others.
Now, what crazy dieter goes to Italy on holiday? I am already plotting my strategy. DH is making of me for almost making restaurant reservations, and teasing me about putting in orders 6 weeks up front.