All this discussion on roof materials, it boils down to what sealants you can use on them. Regular Dicor, self leveling or non leveling is good on any of them.
https://dicorproducts.com/product/se...-lap-sealants/
https://dicorproducts.com/product/no...-lap-sealants/
You do not want to use any other sealants on RV roofs, including silicone.