I have a Velo Orange one mentioned by Oldairhead on an old Cinelli. It looks pretty good
and has the same PITA adjustment issues as every other one-bolt post with serrations (inevitably, how I want to tilt my saddle is in between two "clicks"). EDIT: According to the Velo Orange site, it does not have serrations - so much for my memory. But it was a PITA to set up, as I found it harder than it should have been to get the tilt the way I wanted it. Naughty language was involved.
If I come across a old two-bolt 26.2mm Campy in reasonable shape for a reasonable price, I'll probably get it (I love me my old two-bolt Campy posts). In the meantime, the Velo Orange one gets the job done and looks less clunky than a Kalloy.
Unfortunately, it appeals the Velo Orange posts are currently sold out.