USAF former 55th SOS pilot has Navy and AF Wings
Sorry to interject, but back in 98 at the Mildenhall Air Fete, they had an MH-60G Pave Hawk from the now disbanded 55th SOS at Hulbert Field and the A/C wore a velcro wings patch with BOTH USN and USAF wings. Basically he started off as a Naval aviator then transferred to the USAF.
But I am gathering from the discussion here that here in UK, there is no velcro wings patch for combo of RAF/AAC/FAA wings