Finally found a rear rack that fits with the rear disk brake on mine. Topeak Super Tourist DX for Disk Brakes. Another pix on the "Folders in the Wild" thread.
Not terribly light, but great design and build. Claims to hold 25 kg which should be enough. Still working on getting a rack on the front, but that is just a matter of getting one more bolt which is the right length and then finishing making up my mind about what fenders I want. No tours planned at the moment, but it is good to be prepared!