When switching directly from Atkins to CAD, I had an initial 4 lb gain, then after about 10 days to 2 weeks, it started coming off.

As for the AS, I treat them with caution. If I have them, I try to have them with a meal, not on their own, because I found that if I use them during the day (like sf gum or sipping on diet soda like I used to) I need to brace myself for carb cravings at night.