All AJA's "beta driver" does is make the Mac think that the AJA is another graphics card. So it extends the entire Mac desktop to the AJA. Then you tell FCP X to "Show Viewer on Second Display".
From the AJA FAQ, pg7: "Note: the quality of the output produced during editorial should be considered preview quality."
This is how video monitoring should work: YUV source -> YUV outputs of Kona card -> monitor
This is how video monitoring works in FCP X: YUV source -> converted to 8-bit RGB by FCP X for desktop display -> converted back to 8-bit YUV by Kona card -> monitor
From the AJA FAQ, pg7: "AJA recommends using only one computer monitor connected to one graphics card in your computer for optimal results."
The hardware setup at most FCP post houses is two desktop monitors (one for bins and one for timeline), plus a third video preview monitor. So Apple's suggested workflow for FCP X is to throw out one of those monitors?
Apple either knew about these limitations and chose to pretend it wasn't a problem in the FAQ - sleazy politician route.
Or they fired everyone in their Pro division who understood this - frikkin' idiot route.
Seriously, which do you think it is? And why are you defending them in either case?