I cannot think of smoked meat that cannot be held for a few hours in a cambro. I’m fact, the resting is even advantageous.
It if your desire to transport your SI is so you can be with buddies/family while smoking, I think the tips mentioned by others serve as good advice.
BTW, after you have several smokes in the SI, the seasoning of the smoker holds the smell. I use a cover on mine. When I remove the cover, I immediately get that present aroma.