For rez, milk is obviously a poor choice given the carb restrictions of the diet. For Audacious, who can say?? A 1/4 to 1/2 cup of skim milk is not going to have a big noticeable impact on your fat loss goals. It's all calories, so you just have to factor that in to your overall diet plan. However I find it pretty strange that people want to add milk to their WHEY protein shakes. Seems like overkill. I find a dash of flaxseed oil in my shakes gives them that creamy mouth feel without the lactose and sat fats.