In reply to nickinscottishmountains:
Hi folks, thanks for your replies.
Let me fill out a bit of background. The various sports I listed was more out of curiosity than because I do all of them (I don't).
Where I'm at is I have been using an old Edelrid Shell / webbing design helmet for rock climbing, and after taking a ground fall a few weeks ago I'm concious that my current helmet does not provide much front / rear / side protection. I distinctly remember the back of my head hitting the inside of the helmet shell with some force as I hit the ground, and I suffered headaches for days afterwards.
Added to that I have just started cycling and until I buy a helmet, I have been using my rock climbing helmet as a "better than nothing" in-between until I get a new one.
Having done some research, it appears that shell / webbing helmets are great for protecting against rockfall, but less good at protecting against side impacts, and foam helmets (like bike helmets and some lightweight climbing helmets) are good at side impacts but less good at rockfall. There does appear to be a third way with a hardshell that contains a donut of foam protection around the head, like Wild Country's 360.
I'm wondering if such a type of foam lined hard shell might be good for both climbing and cycling (the 2 things I need a helmet for)?
Anyone have any experience of these foam / hard shell new helmets?
Cheers!