Don't confuse a nose down attitude with a negative pitch angle. It's all about the relative airflow over the wing. People often ask about how wings generate lift upside down. The wings generate lift, for that you need a positive pitch angle, relative to the airflow. Ignore the fuselage.
This is the F8 Crusader. It had a variable incidence wing so that the pilot had a better view on approach while still attaining maximum lift. I imagine, (without any evidence admittedly) that if it's wing was deployed in level flight that the aircraft would display a distinct nose down aspect despite flying straight and level.
