Buckfast Queens~need to know an answer soon!

[Beekissed]

I am interested in buying some Italian bees with a Buckfast queen.  I was told by someone who has used Buckfast bees in the past that she couldn't keep the Buckfast in the hives.  Said they kept swarming repeatedly~ compared to her Italians~ and she finally just let them go. 

Anyone else noticed this as a Buckfast trait?