shame we didn't manage to do a deal, maybe next time
yes you can fit the seats from post to pre facelift cars, the only issue is the occupancy sensor on the passenger seat which is not compatible with the pre facelift cars! which if you search you can see in posts by PawnSacrifice and Ally that they have taken the old mat from their previous seats and put in their new seats or the other option is to buy a bypass sensor!
I still haven't decided what to do with my passenger one, so would be very keen to know how easy is to take the seat covers off!