There is a member here that cooks in his UDS through the winter at North Pole Alaska and never uses a blanket. Only difference is a bit higher fuel usage.
Modded Brinkmann Gourmet. Basic UDS. Rescued 22.5" OTS. SJS Mini-WSM. Stubbs. B&B Oak Lump.
Cannondale 2009 F8 (for burning off all the great BBQ)