When the first two replies appeared, I was so p'd off by them that I decided to defer posting until I'd calmed down. Pleased to see that in the meantime others have posted their more measured views on those posts. Why someone like Bose-X feels the need to sneer at someone looking at taking basic safety measures in an ex-military trainer, is beyond me. Edited to add: it seems Bose-X has deleted the post I referred to.
At airpolice: it should be obvious that a military cockpit is unlikely to be as crashworthy as a "spamcan", and hence the military wear protective equipment.
Taken from the AAIB report of an ex-military tandem trainer crash that took the life of both on board; the back-seat passenger was a young colleague and a thoroughly good guy
The post mortem examination revealed that both occupants received fatal injuries as a direct result of the accident and that their chances of survival, the rear seat seat in particular, would have been greatly enhanced had .... head protection been worn.