I put a little unsweetened almond milk in shakes sometimes. Low calories but very flavorful. Not as high in protein as one would expect from almonds, though.
My bull**** detector is ringing very loudly. I'm not sure Floyd is an ectomorph but I get what you're saying. Pretty much the way I see it, although I don't think the guy is that much of a health freak. He doesn't really drink or eat too much sweets from my understanding, though.