Clinton flew in VC-9 and C-17 for example, so they were AF1
When W. was @ Paris (may 2002), he flew in a VC-32 when he gone to Caen (Normandy). I took a photo, @ Orly, I think it's a rare sight :
VC-25 82-8000 & 92-9000 with VC-32A 99-0003 & 99-0004, together !
Look at "USAF Orly" photo.
By the way, Air Force Two is the callsign of any USAF plane with Vice-president on board.