GTFO with skim milk, he's asking for reduced carb, not reduced fat.
Half-and-half is usually pretty good, as you get the creaminess from the milk fat but of course with half the calories. Try also adding a shake or two of cinnamon. I can't stop putting cinnamon in my shakes now. Works good with chocolate or vanilla.
And icecubes too, for some reason. After a hard training session I'll sip on a cold protein shake with half-and-half milk/water, cinnamon, and ice cubes. It's a nice way to cool down and rehydrate.