Anyone have thoughts/experience on teaming up Dragapult with Charizard?

I’ve been picking up pieces to build Dragapult/Dusknoir as it has a lot of crossover with my Charizard deck, and I just noticed several people brought a Drag/Charizard deck to the Birmingham regional. (Example: https://limitlesstcg.com/decks/list/15283)

Anyone have experience with it? Is it just using two separate win cons while sharing an ability to find energy? Or is Dragapult more of an alternative draw engine to Pidgeot while also having more offensive use?