The Dewalt 1/4" impact driver is a big performer too in a much smaller chassis. You can loosen your lug nuts the old fashion way and finish them off lickety split, and final torquing should be done with a torque wrench anyway. If I didn't have a full set of high end air tools I would definitely go electric nowadays, but not sure I would lug that monster on the road.
Regardless, the 20V XR system is first rate!