Oxy-arm cannula

Oxy-arm link:
http://www.southmedic.com/products/oxyarm.php
If you scroll on down past the oxyarm diffuser, they also offer an oxy-arm cannula.
This thing has a wire in it to allow it to be formed to fit the wearer's face. It could be clipped to a headset mic boom and the headset cable to prevent tangling.
A sixpack is about $25 from some suppliers.
A headband is offered too, but I don't see a use for it.
Anybody using this?
Born2fly mentioned a cannula on is headset boom, Dec, 2007.
He mentioned it in passing when the discussion was about where to place headset jacks.
If you still read these posts, whould you follow up on that for us?

Headset cannula

Here is one:
http://www.aeromedix.com/OxyArm_Aviator_Headset-Mounted_Nasal_Cannula.html
Only $99. !!

And the Sporty's version:
http://www.sportys.com/PilotShop/product/12981
Only $79, and slightly smaller than a garden hose.

Here is another....I have not tried it....I fly with O2 on almost every CC flight and Have not had any porblems with their canulas.....

http://www.mhoxygen.com/index.php?option=com_content&view=category&layout=blog&id=8&Itemid=10

Here is a 6 pack of the cannula only; you figure out how to fit it. $24.95 works out to less than $5 ea.
http://www.seventhstreetmedicalsupply.com/oxyarm.html