Mag shields... good point.
Oh, and I was not thinking of "ejection seat", I was thinking of "ejection pod", whereas the entire cockpit becomes a lifeboat of sorts, the EVA suit being the back-up of this system.
Consider for a moment the immense amount of time and investment needed to train a competant pilot. Surely the powers that be would not send them out without some sort of escape system. In a war of attrition, craft are relatively easy to replace, trained crew is... well,
not. Consider the air war over Europe in WW2. The Luftwaffe did not lose due to lack of birds. They still had plenty. However, they had few pilots to fly them. All other pilots were lost in combat.