It depends on the situation. If the opponent has opposing weather, maybe, depending on if you want to bet on the speed or if you want to go for a switch for guaranteed weather. Or if opponent has a Politoed of his own, you could take a bet and rely on him bringing out THEIR toed and free a teamslot for yourself... or not. Or if you're running Swift Swim and opponent has an obvious Trick Room team, Politoed would be an iffy choice in that case.
Anyhow, like any other strategy, it depends on what your battle style is, and what the opponent has. Don't lock yourself into doing the same thing over and over.