I just saw a Marinoni frame like this 30 minutes ago
http://www.marinoni.qc.ca/html/en_piuma.html
in red, frame only, all steel (no carbon), Columbus tubing, an almost triangular shape on the downtube. Big Columbus dove on the fork crown. I make have to go back there and drool on it some more. But didn't like the geometry when I looked it up - steep seat angles even on the touring and sport models and long top tubes.