Is your truck very smokey? If not then I don't think you'll have a problem if your concern is simply just towing. That said, a good cutout is expensive. It won't cause any damage to your camper other than maybe having to clean it. No worse than having a side exit getting the front corner of the trailer dirty, just changes the place you have to wash.
If your concern is bed space and the trailer hitting the stack you won't have that problem.