A mate of mine had neither Boeing nor Airbus and got hired onto the 330, and a guy on the recruitment dvd says he flew airbuses and got assigned to the boeing fleet (or was it the other way around?). Either way, I guess it just depends which fleet needs more FOs.....nothing is set in stone.
Regards,
OW
PS. Good news on the "short of our min. hours requirement" policy change for applications.