Hmmm an interesting one...
Lets think about it a bit:
Tomac Rode one, but he also rode/raced lots of shitty bikes, so that's no help.
They are fagile and fall apart, so not great as a rider.
They are rare, so if you turn up for a ride or race no one is going to have the same ride as you.
However, if you did turn up to a ride or race with one, all you'd attract is a mass of late 30s + blokes (mostly called Gerald), who think its still ok to wear lycra even though there's 50% more of then since their 20s, going over your bike making all sorts of statements about the bonding of carbon tubes to metal lugs and the types of adhesives used back in the day.
So on that basis alone (and adopting a Clarkson demi god pose) your've all wrong and the C-26 is
Seriously Uncool.
Now before anyone starts arguing otherwise...
The guy that bought the one on eBay probably has it mounted on the wall in his house maybe even over his bed... But when he invites that available 19 yo around to his for a "coffee", all she's going to think is he's a bit of a wanker. So its still seriously uncool