Has anyone seen one of these in the wild?

[Morat]

http://ritcheylogic.com/break-away-double-switchback-tandem-frame.html

Because that looks rather fun, to me
(I wonder if they accept old lottery tickets?)

[The French Tandem]

Never seen one, but we would be happy to try! It would be interesting to see a comparative test of this and a standard frame with S&S couplers.

[Morat]

I've done some more digging around and some claim this is a rare a special unicorn and only two were built. But if you look on Ritchey's page it's listed with a price and also at some Ritchey dealers. Odd.
Sadly it's too pricy for me but it would solve my "MTB or Road" tandem dilemma.

[DaveE128]

Landescape used to make Tandem frames designed to take both 26" and 700C wheels. I have one and rather like it. They might still have some frames knocking around if that's what you're after!

Review here:
http://www.bikeradar.com/gear/category/bikes/urban/product/review-landescape-freedom-series-10276/

[marcusjb]

^ indeed they did.

We had one, only ran 700C on it and it was a great frameset, very light!

We now run a frame with S&S that is just superb, especially the ease of flying with it! But, these things are not cheap!

[Morat]

I wish JD would stock them!