I had one for a year .
Awesome power and totally reliable (although that depends on the dealer ).
However - short range , hard work cruising at reasonable speed , suspension will need expensive sorting.
Great for hooning about on ,only sold it for a much more suitable Multistrada (Pikes Peak of course) which is also brill.
Seems to be loads of 2nd hand Diavels about at the moment , but owning both doesn't sit right with me.
I'm still waiting for a Gen 3 Fazer with the new engine. Some hopes lol.