Using a Pike from horses back = go fuck yourself ban hammer. That is completely fair, because it's totally hilarious bullshit.
Would however having your infantry ride a happy burro to the battle and dismount constitute a ban able offence? Should it?
For my money I say nay :3
All infantry should be able to ride the burro to battle so long as they do not engage in combat from the back of the mighty burro.
What say you, foul peasantry of cirpig?