That's the nice thing about Superfly, Dragonsegg! Other than SSS skin, none of your Poser materials have to be changed to render in Superfly. You certainly CAN change them, but you don't have to do so.
I've used Luxrender (Pose2Lux), Reality, Octane and Cycles in Blender and the easiest PBR for Poser is Superfly.
Actually I am going to have to convert Harry MATs- while not SSS they do not work correctly in Superfly. The lighter colored coats like the Unicorn and Arab do ok but like the black Friesian or even base Harry not so well.. Working on it!