Never heard of it, but as I'm doing Atkins I googled it to find out what it is.
Now I've read up on it I wouldn't bother, it sounds like your weight will go up and down like a yo-yo, as you will just regain all the water weight on carb days. And its very demotivating to have to lose all the gained water weight before you start to lose "proper" weight. Best just to stick to low carb, you'll lose it quicker. And do come and join us on the Atkins forum, its much busier than this one.