I've got a couple of those posts on MTBs. No complaints. Not the lightest, but they haven't broken yet and they're easy to set up. All Ritchey finishing kit would be a nice touch though. WCS alloy stuff can be found reasonably cheaply either On Here on on eBay and works well enough.
thoughts on this?
http://www.ebay.co.uk/itm/FSA-SL-K-carbon-seat-post-27-2-/262634955402?hash=item3d2643628a:g:ohQAAOSwPCVX4Zt5