Dunno, I've only ever had it either with champers or with Monster. All I know is this: I HATE ANISE-FLAVORED DRINKS, but I love absinthe! (http://ehowton.livejournal.com/208424.html)

Edit: The addition of that Monster 'Hitman' makes the entire drink much sweeter than the spumante alone, and one could argue that with the further dilution it adds, it does indeed lower the concentration of the anise.