This stuff says it is meant for all types of roofs, and has RV's listed on their front page, i'm just not sure if I ever needed\wanted to use eternabond if there's enough silicone in it to make the eternabond not stick to it.
My camper is an older aluminum skinned Pastime that has leaked on more than one occasion over it's lifespan and I rebuilt the entire roof as well due to that. Just thought i'd throw something on to get by for a few more years and fill in any pinholes that might be around in the roof.
Seems like more of us TC people have the really old rigs, lol.
later
C