Veggiebikerdude, I think that it will sell well. While I, equally, wouldn't be seen dead on one, it will appeal to the non-touring custom bike market, those who want the baddest critter on the streets, but not necessarily on the interstate.
If Ducati can tap into the custom/cruiser bike market with a decent list of accessories, in much the same way that Harley Davidson do, then I think they''ll succeed. This is not a Harley clone, and neither is is an overweight V-Max clone. This will find it's own niche, I would imagine among those who don't want the Harley look-alike image, but something more esoteric.
Ducati are attempting to break the mould, and should be applauded for at least trying. For me, the headlight treatment is awful, and what primarily lets the bike down, but that's just my opinion. Beauty is in the eye of the beholder, and there will be plenty of buyers out there who will think otherwise.
I suspect that it will sell for its back tyre alone!