Hmm... that's another post I think! The danger with orange juice is that juicing removes more of the fibre so the fruit sugar (fructose) can give you a blood sugar spike. That's why you shouldn't drink more than 400ml. It's not that it's not metabolized – it's metabolized too quickly. But you'll still be getting vitamins from the orange.
You could certainly drink a smoothie in the evening, or at lunchtime. The fibre in the smoothie should slow down the metabolism of the fruit sugar, especially if you add greens such as kale to it.