I asked around at the company my wife works for and they say they always spec a switched half hot or two, so it is not an issue with them but you are still going to be inspecting a dark room in many cases, unless you brought a lamp with you. You don't get much light from an outlet tester.
I did watch an electric final and basically all he did was trip all the AFCIs and GFCIs with his tester and make sure the ones he could find, reset on his way out the door. I assume the criteria is if he finds an outlet in a protected area that doesn't trip with the tester you fail. Since these are master plan houses with about a 1/2" stack of change orders it is virtually impossible to figure out what all the switches do from anything in the permit board.
