It really isn't.
I highly doubt it will be a tier one deck, but it isn't useless.
Since it's almost virtually impossible to get out. Yes, you can special summon the two, if you can manage to have two special summoning cards in your hand, along with getting the other one out with enough tribute fodder staying on the field for such a task.
I mean possibly, since it's presence wins the game, but I just don't see it happening enough to actually want to run them in a deck.