My shooting partner is also my brother and says I'm obsessive as to cleaning the sensors of the D3S and the D-90.
He uses the "other" brand and has his wide angle zoom on the full frame and his long lens on the crop body and doesn't change them out very often by making the claim that dust then isn't as much an issue and stating bluntly that one would never turn over to a client an image that had not been dusted off in LR or CS etc regardless. Well OK then.
I'd generally set up the same for the D7000 which I likely will also pre-order just to have in the bag when out in Death Valley etc.
That being said, I may well donate the D-90 to a graphic and fine arts grad who is the wife of one of my old business associates along with the entry level kit lens should the D7000 land on planet earth next month. They have had a rough couple of years.
Yes AFAIK, the black silicone is still relegated to the black helicopters.