I think its "tasteless" -- or unflavored - so you should be able to mix it w/ just about anything to get a particular flavor -- for ex, a little sugar free / fat free Jello pudding mix, I've used some no-sugar-added hot chocolate mix (like 1/10 a packet), or some Gatorade for an PWO w/ the simple carbs for recovery. Probably some Crystal Lite for some flavor but no cals.
Bunny uses it. I believe Ghede does as well. Have never heard anything but rave reviews on it. (And of course, being an AF product, would be nothing but top quality...)