Wouldn't that be almost like a Bandera? Your biggest problem will be getting the heat evenly dispersed in the smoke chamber. The heat will want to go up the wall closest to the fire box.
Team: Pyle's BBQ; Good-One "Trail Boss" 60T; Homemade rig; 22" Weber Kettle w/rotisserie ring; Big A$$ Rotisserie; BGE-Small; Weber Kettle Gold, Weber OTS, New Braunfels offset smoker.
Saddles BBQ Bistro