Torque measurements aren't a very accurate way to measure bolt/stud stretch unless you can control the friction of the threads. Wheel studs have got to be one of the filthiest/rustiest threads on the whole car - there's no way that tightening them to 80ft-lb will guarantee "correct" tightness.

Power/Air tools are fast and easy (when you're at home anyway), but you want to ensure that you can get the same nuts undone with the hand-tools you carry with you in the car else you'll be banging your head on the wall trying to get a wheel off when you get a flat.

I only bother using a torque wrench for big critical bolts (head studs etc...). If you're not fully cleaning the threads and lubricating them each and every time, then your efforts are wasted anyway.