For now, yes. The next feature to Framer will be insulation in the stud cavities and then siding/veneers. The easiest method for now is to use the area of the wall sheathing (perhaps, or other method if preferred). I already use the area of sheathing in Estimator to generate housewrap takeoff, and then add (+) another entry for wall insulation. I have found my insulators measure walls without taking into account the voids of studs, so it would just lend a little waste to the results.