Big Airways now never touches QFE. I remember going into Addis Ababa in the old days trying to wind 8,000' worth of subscale setting on for QFE. It took each pilot out for several minutes. What is it good for? When you are in the circuit, you want to know
1-how high you are (amsl)
2-how high the terrain is (amsl)
3-how high the airfield is (amsl)
Armed with that lot, you've cracked it. Wander out of the circuit with an altimeter set to QFE and it isn't really telling you much anymore. QFE should be banned- there is no place for it in modern aviation.