The pleasure is all mine. If you want to destroy the workings of your bike with WD40 then by all means, who am I to interfere…
As far as cleaning your wheels. If you really want to go through all the work of cleaning the wheels, by all means go for it. But before you know it they are going to be filthy again. If you have some gunk build up, after you sud up your bike hit the wheels right quick and it will take care of a lot of the crap.
WD40 does indeed remove the grease from the inner-workings of your chain. Avoid it.
The grunge brush is a chain cleaning brush btw!
~Not your average hairless monkey