Does Gragas Mid work in this meta?

I've done it more than I've used him in the jungle, he pushes well enough you can counter jungle 1 camp or so if there's free time before going back to lane

Why not? If your team needs CC, Gragas provides just that.

He should. He's the closest thing to Lux that isn't Lux.

Well as long as it's not Barrel Assassin Gragas, I say you try it out, that way if it does work and suddenly people start playing it, I don't have to deal with a tanky mage who can kill me 1 second flat.