I know that Atkins allows you to subtract total sugar alcohol grams from the total carb count, but this is still considered controversial by nutritionists/dieticians.

Sugar alcohols vary so much in their absorbability in the body, some advise counting all of them, some advise counting 1/2 of them and some (like Atkins) let you subtract the whole thing.

Of course if you're on Atkins, you'll probably subtract the whole thing, but it's still controversial.