edit - sorry just saw your later post saying based on your own experience, fair enoughKeppie needs to get some headgear on. It wont prevent all concussions and impacts but headgear certainly cushions a lot of it and certainly would have cushioned the head to the ground issue on Saturday. Not saying he comes out of that with nothing... but the outcome is much less severe.
Source?
(Every study I have heard of has found headgear does not provide protection against concussive injuries, only protects against head cuts)