Glucose-Oxygen fuel cell conventional representation

I think the current convention (I had to look it up) is that reading the cell from left to right will tell you the reaction that should happen. Glucose is being oxidised to CO₂ ; O₂ is being reduced to water. This means that glucose must be on the left and separated from the CO₂ by a phase boundary. The O₂ must be next to the bridge because it is becoming water. If we put H+ next to the bridge on the RHS then we would have to put the water with it, because they are both in the same phase. This would force O₂ to be placed on the very far right, which would imply that the reaction is H₂O becomes O₂ which is the opposite of what we want. This is also the reason that the H⁺ must be placed to the left of the water - as we read the cell representation we understand that O₂ and H⁺ are becoming water - this wouldn't work if the H⁺ and H₂O were switched.

That's different from what the textbook says though where it says it has to be the chemical with the higher oxidation state and there are definitely examples used by AQA that don't have it going in reaction order.