Has anyone had a chance to play Uthuk vs. Uthuk or Daqan vs. Daqan?

I'm curious to see how mirrored scenario cards might play against each other. Also I'm thinking ahead to tournament play and whether mirror matches might be allowed, or if that might be too goofy.

You would have to mark somehow which units belong to whom. Apart from that, I see no reason why mirror matches shouldn't work well.