This thing might work to hold a helmet on any bag:
http://www.amazon.com/Tribe-Outdoor...UTF8&qid=1436880101&sr=8-1&keywords=tribe+one
That is actually pretty cool, thank you for the link.
I plan on hitting up MEC or SAIL with my helmet & jacket and see what bags I can stuff it into. then see how compact I can make the bag. if it can fit on my bike and lay flat I may have a winner.
I picked this up for small items and some (point & click) camera gear, for anyone interested I'll post a review with better pictures/video
http://www.revzilla.com/motorcycle/cortech-dryver-tail-bag