Okay, I should probably chime in here.
Full disoclosure: I'm friends with Graham.
For several years now he's been buying unridden Ducatis. He has a nice collection of very low mileage or out-and-out unridden bikes. He has my old 916SPS with 7 miles on it and XLR8R's (Matt's) virtually unridden 996R, another friend's unused 998R, along with a lot of other special Ducatis. He got this SS in a package of unridden bikes. He didn't necessarily want it but he needed to take it to get a couple of pretty special bikes. He's had it for a year, it doesn't quite fit in with what he has, he needs the room, so he wants to sell it.
I have to admit that I didn't know much about this particular model at first but Matt did some asking and I did some asking and from what we've been able to gather, this was some kind of track day special that was meant to be stripped of the stock bodywork and replaced with track bodywork so Ducati didn't deliver it with lights or any of that stuff. I do think think that there was an 800 stripped down version as well.
Anyways, I think that it's a cool bike for someone who wants to put the street parts on it or put track bodywork on it. I don't think that Graham is asking the world for it so if someone does want a new 1000DS, it would be worth a look.