I'm using the same method on my helmet. Waiting for the clips to come in from China.
http://www.ebay.ca/itm/270950177882?...84.m1497.l2649
In the meanwhile, I've used a couple of rubber wedges from an ear guard to connect the mask so I can use it.
I've also got rail clips for my goggles coming in.
http://www.ebay.ca/itm/270956931241?...84.m1497.l2649
My Cavalvy headset is connected with velcro on the left side of my helmet, and the ear guard (the one I got the rubber wedges from) is velcro'd to the right.
Its great at the end of the game to be able to take off helmet, goggles, lowerface guard and comms all as one piece. I hated having 3 extra sets of straps for each thing all that sitting on my head making the helmet very uncomfortable!