re: the nose and belly cameras, the new SAS longhaul Airbuses (330s and 340s) have them, and in economy class where there's no screen to stow they were on for both takeoff and landing, though they seemed to be switched off immediately before pulling into the gate, at the captain's discretion. Very cool to see a skewed lineup for a crosswind landing with a last-second correction for the roll. Though slightly disturbing to be pointed directly at the Empire State building right before the final turn into Newark.