To be honest, I'm not sure I see the need for a helmet, the fly-screen does seem to protect quite well, so should stop flying stones and small furry mammals, and as long as the eye protection is good I rather suspect that a good flying helmet with internal padding should be more than sufficient.
Having said that, I do have a cheap open faced Lidl lid, with drop down vizor already, so expect I will wear that.
Track days are of course a different matter!
