Carbon cranks

Hey on MoJoe’s thread http://www.unicyclist.com/forums/showthread.php?s=&threadid=21307 under the URL that John Childs fixed up http://forums13.consumerreview.com/crforum?viewall@26.qenFaOKFoQ1^17@.ef78e91 I saw an ad for carbon fiber cranks. Anybody ever tried them for uni?

handle

Has anyone ever tried a carbon fibre seat handle?