JP, not doughting you in the least since you are more experienced than me. My take on this is a virgin queen would go to the oil because as you said she might not be fully developed yet, well at least not in her queen duties, do you know what I am trying to say??? The oil may be so much more overpowering that the queen would think there is a stronger queen in her presence and would think like a worker.
Most swarms would have the old queen (except a secondary swarm) and she would be more set in her ways. If she was to smell the stong oil she might think she is in a hive that already has a queen and decide to leave before a war broke out.
Just thinking out loud, I always seem to have a different twist on things.
No disrespect intended, I will always be learning.