Pulling the paper off in full sheets is the ideal way to remove paper (in my opinion). When it is scored, it tears. Not to mention that scoring is a waste of time (ie., not necessary).I call BS on the scoring wheel damaging the wall. As long as you dont press hard, it leaves no marks on the wall whatsoever. I dont see how you think it would make it more difficult either...
I will concede that the wheel shouldn't damage the wall if the correct amount of pressure is used, but are you seriously telling me you've never had to skim over wheel marks on drywall?