YAHQ- Any PIREPS on "in ear" PNR headsets?

Yes, another headset question!

Has anyone had a chance to use Clarity Aloft's headset
(www.clarityaloft.com) or the new lightspeed Lightflight L1
(http://www.anrheadsets.com/productsL1.asp) by chance?

I'm curious about these new in ear style passive noise reduction headsets as
they seem to offer several advantages:
-Lightweight
-less bulky, both on head and in flightbag
-no batteries

....and disadvantages:
-cost
-foam tips need regular replacement
-not as durable as my H10-13X

Is anyone here using these types of headset?

Nope, but I wonder about the ear canal becoming painful very quickly...
As a ham radio operator I often use an ear plug head set under a
standard head set so that I can listen to two radios simultaneously...
If find an hour is about my limit with the ear plug speaker due to
discomfort...

Denny