questions about specialized tri-spoke wheels

[zaku]

i'm in looking to purchase this set of wheels for try out. and have few questions as i'm new to carbon TT wheels.
when buying an used pair, what should i definitely look for to ensure it's in good and ridable conditions? i know to check if there is loose bearing play, cracks/dents on the carbon fiber and if the wheel is true (will these even go untrue??). but is there anything else i should note for?
and if these wheels can be be ridden casually on normal streets (not in tracks only)? will they break or wear faster than normal spoked wheels?

 

[Powerful Pete]

Why would anyone ride a carbon fiber tri-spoke 'casually' on the road?

I must be getting old and not understanding all you young guys out there...

 

[Phill P]

Check the side walls for wear. If they look too thrashed then you may not get much more life for what you are spending.

I saw a pair of tri spokes in the LBS recently and I could not believe they were still being ridden, apparently the owner was "a big guy" and hard on brakes.