It wasn't too long ago where one of our members posted pictures of his coach being torn apart by an incompetent towing company. I believe the towing company's insurance was going to take care of the repairs, but that is beside the point.
That said, I have seen many many more RV's being towed than I have seen on lowboys. If the guy knows what he is doing, any RV can be safely towed. Depending on where you are at, and the availability of equipment, you may have to go along with what Freighliner decides. After all, they are the ones taking full liability for the tow once they show up. Let them do their job.