Now I have to look that up. So, I can blow the domain and still pull it off at 1st level. I lose access to many of the Knowledges, but keep Arcana, Religion, and The Planes, which are all heavy hitters. Then, I can pick up one additional with Knowledge Devotion. Really, it's not all that bad, because I can still cross class all of the other nice ones and get one rank, which is still a +1 to hit and damage, which isn't too bad.
This also frees me up a feat, which is a good thing!