Indeed, I spend most my time thinking about Maelstrom of war Lists, as its what i play at my local store (and when I think Comp, its the LVO setting which does encourage MSU currently)
My conversation usually goes "Maelstrom or Eternal War? I have the cards--ah, you don't? All right, it's too much of a hassle to roll the objectives on dice, so let's play an Eternal War mission."
I figure if I get the Daemonkin datacards, then I'll be able to hand off my extra deck of objective cards on temporary loan to get Maelstrom games in more than a quarter of the time...