I had occasion to come across an odd little bike - a Colnago Titainio. Looked to be early 90's, and was outfitted with 8 speed Dura Ace. It was a very pretty little bike, but was odd was the down tube - or maybe I should say down tubes. The down tube was actually a pair of tubes, much like a mixte top tube, that started close together at the head tube and ran down to the BB. Really odd looking.
The seller wanted $950, and that was a bit much for a "pig in a poke", so I passed on it. Something about the DT screamed "evolutionary dead-end". When I got home, I did a little Googling and found a few bits of information. Evidently, the twin tube DT was a very short-lived feature, and there are a lot of anecdotal stories of these frames being whippy and prone to cracking at the BB/DT junction.
I'm thinking I made the right call, what do you guys think?