Some police pilots have NEVER flown fixed wing other than for selection procedures in the Army.
I have commercial aeroplane and helicopter licences, both with Instrument Ratings. Make me a good offer and I will consider coming back to police aviation.
A few years ago I offered that very thing to GMP, the interview was nothing about aviation, all about politically correct stuff/conflict resolution etc etc. I didn't really enter into the spirit of that and came across quite poorly. Lucky for me with the way fixed wing went.....
Hopefully the interviews are a little better these days.