Oh they are painted indeed. Though I didn't think to use the high-heat paint on the shields. I didn't really think about the heat transfer from the rotors. However I did paint them with some of the rust inhibiting paint just to be sure that stuff woudln't come back. But if it burns off that won't do me much good...
The calipers are painted with high-temp paint for sure.
Well, I guess we'll see how the heat treats the paint on those shields.
And yeah, all I used is the wire brush. I went through about 3 or 4 of them though. They take all the rust, paint and everything else right down to bare metal.