Been pondering the same question. Thought about mounting a box on the rear to store it in or even doing a bumper mounted smoker but concerned about getting the back of the camper dirty. Thought about making a box to fit in bed of truck to stow it in but don't really have any help to move it. Would probably be awkward to try and move it around by myself.
I like to offset wood fired smokers. Traveling with firewood is such a no-no, but the pellet smokers might be an option.
If I had a toy hauler I'd just put it in the back and go.