I'm finding the stainless steel is a great insulator so far but i figured it couldn't hurt making a jacket for it since i was making one for my UDS. The stuff is rated for 250* working temp and it has mostly dead air space between it the smoker so even if i'm cooking at 350 it shouldn't get that hot on outside of the smoker.
The air intakes are still able to breath as well and i can access the food. I'm in the process of making one for the UDS and will post that as well. I'll fire the UDS up tonight for a test run.
It's just a slip on so no cords to hold it in place.