Yikes! If I were getting a set of Volks I would just bite the bullet and keep them waxed and washed normally. By default, that is THE safest method.
Besides, hopefully (please!) you'll only be running these wheels in the summer months when the weather is good enough to allow longer detailing hours.
I currently use A2Z and other cleaners a lot, but none of the wheels are expensive or in new condition (not that A2Z seems to have harmed anything) and they are difficult to clean. I AM switching to wax/soap once I get my 17" 5 spokes in a couple months though.
EDIT: Question guys ==> How do you clean riveted wheels? I noticed those Volks have rivets, and I know that's something that I've been wondering about...