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?