I agree. You don't need too, but you may want to experiment with a topper to see if you like the look. I would use a 'clear' carnauba like S100 or Meguiars #16.
I also agree.............. sure don't need too, but why not see what a topper will do. I've seen one vehicle with WG only, and it looked very nice. When it was topped with Natty's wax, I liked it even better!