I have one and it works great. Not Bose audio quality but did not expect it to be for the price. Give them a call at 949-273-0399 and ask for the HDForums.com discount code. Will give you $10 off.
I run the cord thru the "V" in the helmet strap on the right side to keep it from sliding off my ears. This stopped the the discomfort as well and can wear them all day long...
Bought 2 sets and I think they work fine although my wife says they bother her ears after a while. I haven't experienced that though. Like someone said earlier, not Bose quality but adequate. A couple of my riding buddies have them also with no complaints.
I have 2 sets and others in my riding group have them also. They work well for como but not the best sound quality for music. Better than the HD ones that I got with my 2 ultras. I don't use the HD ones anymore.