I can also vouch for this decks consistency and speed, I run this deck and i've had very little problems speed wise :) Its consistency isn't bad, but no its not great by any means, it is incredibly fun to play however and has large advantages over many popular decks :)
Couldn't have said it better myself, even without skyfield Shiftry can still knock out decent numbers. And the potential draw power from turn 1 would be a great benefit :D