OK, so would you agree that ATi drivers are troublesome to work with?
Are you talking about single or dual GPU ? but you remind me of those guys who had Radeon 9 series and don't wanna acquire the new cards because they had issues with their previous cards.
So the answer is no, i have a single card but i worked a lot with Dual GPUs in CF & SLI, can't deny that some releases of the CCC caused serious problems with CF setups and found members here complain about nVidia drivers and SLI, but soon gets quickly fixed and you can see from toms charts, the HD 6K series are on top of the GTX 5k series except for the 580.
Anyway your question is not related to the main question.