I received my helmet mount rearview mirror yesterday and my balaclava and pogies today.  I think I'll be happy with my purchases.  The mirror fastens to the helmet with a rubber clasp that is passed through a side hole of the helmet, around the mirror rod, and then again back through the hole.  I have a feeling that if I wanted to ride with it always I would want for one that has a better mount.  This will do nicely until it warms up, however.  The pogies I think will work great.  I was concerned about how much room was inside for the hand to get to the gear shifters, brake, and thumb throttle.  I haven't mounted them yet but I think there is ample room to maneuver the hands within the wind blocking mitts.  The balaclava is well made and the opening for the face is a vastly improved design from my old.  I think it will do the job and be much more comfortable.