Etihad also has them on all but 4 aircraft (older leased ones)
They are great as it lets you see what is happening infront of the aircraft when taxiing and landing - but are a pain for the crew - 'cause sometimes (but not all), the pax watch it and when they see that they are near the gate upon arrival - they all start to get out of their seats!!! Groan
Just as the brakes are about to be applied!!
Other wise they are great for the pax and crew alike, as some of the crew can see the pax screens and see exactly where the plane is..
Modern technology can be great sometimes......