Interesting... I was just discussing these two varieties yesterday with another bean collector, from Canada. Blue Jay has been fairly popular up there. Blue Jay was developed from a cross found in a patch of Comtesse de Chambord. You can find more info from the source of the variety here:
http://www.abeancollectorswindow.com/bluejay.html
I haven't grown Blue Jay yet, but hope to next year.
Just out of curiosity, Baizanator, how did you hear of these two? Has there been an article written about them recently, other than the ones mentioned in the link above?