Oh gosh, just watched it last night because I have Explorers of Darkness...
I almost couldn't take it seriously. The moment Grovyle spoke in Dan Green's voice, I tried my hardest not to laugh. It's so awkward seeing the other Pokémon speak even when we're so used to Meowth and the occasional other. I actually hadn't realized the old cast did the voices until I heard Maddie as Chatot. I'm a bit disappointed Wigglytuff had a female voice, but at least it was deep, even if it was still obvious.
The moment Gabite did his Attract on Sunflora, I pretty much died. It's just so... awkwardly funny to be taken seriously.
Still, I did find myself liking it. I wish I knew where to watch the other episode, though.