I switch back and forth between Fenders and my Dingwall frequently. Even though the B string is 37" the basses orientate themselves, or "hang on you" much the same way. FWIW, I use the same flight case for my Fender P's and my Dingwall. Grabbing the first fret on the B string probably takes a little getting used to based on watching other bassists play my bass for the first time, and that's about it. I don't do a lot of "shredding" or running down low on B and E strings, most of the time when I'm more "active" it's in the higher registers so YMMV.
When I had parallel fretted basses (sold my last one a few months ago), I never had any problem bouncing between them and fanned frets either. The 34.25 to 32" scales of my Super P and J/P are perfection for me. When I started playing, basses only had four strings, so as perfect as my five-strings are, four-stringers are always going to feel like home.

