It's been a week of ownership coming from a 2014 S1000RR to the V4. This thing is a beast and I am very happy with the bike after 450 miles of riding. The bike does get very hot but it's manageable with the right gear on. Really only behind my left thigh gets cooked.
Here are a few things in contrast between the two bikes.
1. The Duc is definitely not as smooth as the BMW, in terms of low speed driveability, or vibrations. I feel a constant pulse throughout the bike when cruising on the highway below 6k RPM(still breaking her in). The hydraulic clutch takes some time to get use and gives me weird feedback - I prefer the old cable pull clutches still
2. The bike is an all out performance beast! The weight savings of ~ 20lbs is definitely felt. The Pirelli SP V3's paired with the geometry of this bike makes turn ins, and switchback feel like I am on a 600. I felt like on the S1000RR I had to muscle it a bit to get the bike change directions and it still felt like it wanted to plow through a corner. On this bike, I feel less exhausted after a long day in the mountains. I hear the newer 2015 S1000RR's have better turn in but I've yet to be able to ride one to feel the difference.
3. The DQS is not as aggressive and punchy as the S1000RR, which I don't mind - it's buttery smooth actually. It took some time to get use to the DQS for downshifts as I normally downshift myself and can do all it fairly quickly but it's nice to have. I just have to remind myself to close the throttle on downshifts.
4. The headlights and DRL system is awesome! The bike is gorgeous and everyone I ride with is jelly
Overall- If I had to choose between the two again, I would go Ducati again. Let's see how the bike holds up as I plan to daily ride and track it as I did with my S1000RR(25k miles/ 4years without issue)
Looking forward to the Ducati Camaraderie