I almost never need 3 extra Energy at startup, so I think Smeargle is a pretty useless starter overall. HOWEVER, if you aren't planning to rain down many supporters and neither to shuffle your hand back in your deck a few times, a Smeargle start might supply you with Energies for the whole game. Only problem is setup, cards that help get out Pokes/Evolutions are infinitely better since you can attack faster while powering up Benched Pokes a bit as well. Remember, you can have a fully powered bench if you like, but it is not at all necessary. As long as you can keep attacking, you'll be fine.