Well I crash-tested my helmet today just South of Pemberton. The Sy-max is a modular helmet (flip-up chinbar) and I've been very happy with it.
I did a little off-road excursion on a hairpin today and ate some dirt. The helmet stood up reasonably well, but I have a swollen schnauze. Somehow, something made contact with my nose -- I think the chinbar must have deflected enough under the force of impact to make contact.
I guess I'll be in the market for a new helmet. As much as I like the flip-up style I think I might be looking for a regular full-face next time.
Of course the moral of the story is to stay on the bike!