Nope, no ex RAF pilots on the fleet at the mo.
No stick time? What????
I've only flown six types in BA, but I can promise you that you get vastly more 'stick time' on SSC than any other type in the fleet - the aeroplane is designed to be FLOWN. The FD and autopilot aren't even optional for departure/arrival(except autolands).
As for who flies it - the good and bad news is that it is, as stated, something of a sideways career move. As a First Officer you will have passed up a command to bid for the Conc and as a skipper you will have to commit the rest of your career to this a/c. This is too much for many given the very substantial pay cut entailed in flying it. The good news is that it's a very small fleet and, owing to the foregoing, everyone is there because they want to be.
Is it worth it?
Does Dolly Parton sleep on her back?