Has anyone had success the Rosemary Conley Gi Diet? ?

I've started it and find it great though quite strict i'm still surprised how much i can eat and i've lost 5 pounds in the first week, my sister has done the first 2 weeks and lost 10 pounds. Its very sensible i guess, low cal low fat and i think its one of the best diest i've done, i feel great. just wondered if anyone else had done it and what happened?