Season Passes are bound to the first set of characters that log into the game after purchase. This allows them to move with your Cross Save characters across platforms unlike licensed DLC. So yes, you would be able to access the seasonal content on both platforms if you buy the Deluxe Edition on one platform and just the Standard on the other. I'm not sure if you're just using Presage as an example or if you're not aware, but just in case, Presage is being removed from the game when Witch Queen launches, so that activity won't be available on any platform.