Hi MB, I think BTI knew of someone, still currently-serving as a part-timer, but I'm not certain.
That's a great quote from Prune, yes, that equals pretty-much what I knew, with the added info that he was initially commissioned into the RAFVR(CC) as an AvO, then transferred RAFR(CC) when the RAFVR officially disappeared in 1997, but intrigingly a full-time non-service QSP would probably nowadays still be commissioned into the VRT despite not being a part-timer (being effectively a civil service pilot required to wear RAF uniform in the discharge of their duties...if they still have SAvOs?).
I wonder if a true 'no previous' DE full-timer appointed to such a post would have to do the full ROIT, the SERE, or just the OIC? Possibly still the ROIT....? Hmm, that'd maybe just be for RAFR FTRS...