Figure: G450 HUD over Alaska, from Mike Keller
There are types of pilots in the HUD world: the HUD-denyers, the HUD-users, and the HUD-cripples. The HUD-denyer uses the HUD only in the simulator and only for the required maneuvers. They are set in their ways and not about to change. The HUD-users employ the device as a tool, choosing it when it is a better option than the Heads Down tools. The HUD-cripple uses the HUD as much as possible and has come to the point where not having a HUD is a problem. Me? I am a HUD-user on my way to becoming a cripple.