Daughter learned this swing from Coach Hubbard at North Texas. Some of the other girls she has played with have kept this style and has been very successful with it. It was too much movement for my kid but she liked the position it put her hands thru the zone. We played around and simplified it a bit. Took the tip out and started bat resting at her lateral delt(side of shoulder). Hands still where she wants them thru the zone and no extra movement.
We found the tip, or slight flop of the barrel toward the pitcher, was what made this swing to appealing in what it accomplished.