To do that with a bottle I'm thinking stacked batteries, one in front of the other on the one side and the bottle on the other side. So the shape of the mod looking straight down on it would be a rounded triangle. And it prob be best to have the squank hole on the side for the first time.
Forget that.. just held 2 18650s next to each other I'm my hand and it's too wide.. they would have to be staggered so the mod wouldn't be that deep. Good luck fitting a bottle I'm there as well.
14500s?
Nope, side by side batts and bottle would work just fine for me because I don't care if the Reo is wider side to side.