Elmlea, in both yours and my current roles the dangers of front seat ejection ought not to be a concern that often!
Doesn't the front canopy split along the centre during ejection, and get pushed aside by the seat as it travels upwards? I seem to remember the comparision between the splitting canopy and a bug's wing case as it opens!
Agreed, I'd be most dis-inclined to use the canopy fracture in flight! Is there not a hawk drill which invloves manual bale out that way, though?
Blunty.