Not really.
Helmets of any kind won't do **** for concussion.
not unless you pad the inside of someones skull.
from my own experience, the worst few minutes of my entire rugby life was last year, when one of the lads i coach played when he probably shouldn't have.
He took a heavy knock in the game the week before, but i wasn't there so had no idea how bad it was and the other coaches were not there for this particular game. A couple of players said to me he shouldn't play but he was adamant he'd been checked out and given the ok that he wasn't concussed etc... I said we'd watch him in the warm up and he seemed ok, but i said he'd sit on the bench with the caveat he wouldn't go on the pitch again unless really needed.
Anyway the inevitable happened and we had an injury in the second half and we either played short or he went on - so i reluctantly relented and let him go on. 10 minutes later i took him off again - as i was so worried i had to do something - resulted in a big massive touchline argument and him storming off "leaving the club" etc...
It all go sorted out but it remains one of my biggest regrets as a coach, and still bothers me a good year on that i didn't stop the lad playing despite his assurances.
The point i'm making really is it's at the lower levels where you don't have medical support, you don't have the knowledge in players or coaches to handle concussion properly that the serious issues are imho and i think the best thing to come out of these incidents is the profile awarness of this type of injury (much like everyone had a stinger the years after JW did), it's how it filters down that is important.