I have 2 Ducs, a 2002 998 super bike. (bought it lightly wrecked with only 3 miles on it recently, been acquiring parts for it) and a 2001 S4 monster, the oddball one year with the 916 motor in it. Another light wreck i got cheap im rebuilding.
Ducs are cool..but expensive toys,. are you thinking of installing the rear wheel too off a Buell? Not all Ducs are the same, for example my S4 is way different than the 998 with a mono shock and full swing arm and the 998 has a mono shock as well but single sided swing arm, but SOME ducs also used a cush drive in the rear wheel, I am not sure how many ran the rear cush in the wheel and how many didnt, but the point here is that if you run a wheel without a cush on a bike intended for it you are going to have some expensive mechanical issues.
I personally believe the more cushion in the drive, whether in the rear wheel and sprocket assy or in the clutch assy,, either way, its a good thing.
I know many sportsters dont run a cush and as a result suffer from drive train and transmission issues as a result, just something to think about