Yeah I use semi skimmed milk for my hypertrophic shake but I am DB CBL. my reasons are 4 fold:1. More protein, it gives me 15 grams extra protein 2. It supplies the casein which Kiefer suggests for post training shake without having to buy it has a separate supplement. 3. Additional carbs, as semi skimmed milk is predominantly a carb based substance providing 5g of sugars per 100ml4. It's makes even the worst supps taste a f****** awesome! Personally Mine taste fine mixed with water but milk takes it to a whole new tastier level.