If you are worried about exceeding the 130 amp rating, or starting the truck from the camper, you will need a lot larger the #10 wire and a lift gate plug between the camper and truck.
Another thing to be aware of with charge sensing combiner relays is that it may not disconnect (once connected) if there is a charge source on the far side. If you have solar on the camper, run the truck (which connects the relay) then shut it down, if the system voltage continues to be held up by the solar, the relay will stay closed. Often that is a good thing, but sometimes a surprise.