This whole discussion seems to be off on picking apart the idea of using folding bikes to tour. Both rational and irrational reasons are presented, but the only ones that have merit were the cost and possible fit issues. I note also that the naysayers are mostly people who haven't really given one a good try. I may be misjudging, but that's the tone I heard.
As for folding bikes looking funny, the same thought process scares people away from recumbents - and many of them make exceptionally good touring bikes. Let's keep our minds open, friends.