Michael, do you know anything about compatibility between intel drivers and catalyst? It is very important for laptop owners with hybrid graphics. Currently catalyst doesn't support intel>=2.20.3. In the mean time official stable driver from the intel web site is 2.20.12. Also catalyst doesn't work properly with Mesa>9.0. It would be good if somebody would shed light on it.
Also there is a work to bring bumblebee to AMD hybrid graphics. But according to this thread, there is a problem with fglrx. I guess it somehow relates to the first part of my message.