We had a few DAL captains go to KAL after the bankruptcy with varied degrees of satisfaction. I remember reading one guy's synopsis about the training process and it wasn't flattering.
I have also heard that you will have to like being by yourself. The Korean F/O's won't have anything to do with you. It's supposed to be very isolating.
Now, this may not be the case. Maybe someone has more information. I'm not really into Kimchee. I got over that in the military. Smells to high heaven.