I have the Toyota Harrier AirS-Japanese version (Similar to Lexus RX330 but with the 3000cc engine and Air Suspension) which equipped with Multipanel Moonroof.
I find it quite cool to have a moonroof as a size of windshield. Especially the rear passanger can enjoy the stars at night. I don't think you can put a roof rack once you put the multipanel-roof.
Joe
PS: I attach the pic of the multipanel-roof.