From my research, I found lots of people gain weight from raw. I think that is why many people start looking into a low-fat raw diet.
I know when I first got Alissa Cohen's Book & DVD I told my husband -- "This is it! I can eat anything I want, as much as I want, as long as it is raw! I can eat desserts for breakfast -- and the whole damn pie if I want!!" That is seriously what I took away from all that she was saying. Maybe that is just wanted to hear, but I know things like that were said.
I now look at it very differently. Eating like that will make anyone with weight issues fat. High fat diet = fat person. (if your genes allow!) Plus, it isn't healthy to consume all that fat -- even if you don't gain weight.
This is just my 2 cents! I am certain that there are people on this board that gained weight on raw. I think Ginger weighed her heaviest ever on raw, if I remember correctly? There may be a thread about this somewhere! I will look!