If it helps I have an ST4S which has 21,000 on it in just over 3 years, no major problems-it had an ECU fault which Ducati fixed under warrenty. Lots of my miles have been 2 up with panniers, and quite a few have been on the track.
I think the main difference between a Ducati and a UJM is that the Ducati feels like a motorbike whereas the UJM feels like a car-bland-to me anyway.
I also have a Yam TZ250 which feels NOTHING like a car...
John