Well I managed to get a nice evening dogfooding: http://stargazerslounge.com/topic/192900-atik-osx-drivers-r100-example-app/page-7#entry2530845

With some very basic first setup imaging - including the flame nebula and the horsehead.

However the attempting to process the 5 minute subs this morning in PI was fine.. but then attempting aladdin this morning at the same time was too much for my poorly MBP. After a good 2 hours of power button pushing it got beyond a blank screen and DVD drive whirr to start up... upon entering the desktop:

Thanks Apple..