don't hesitate to buy something expensive or fancy if you so desire. I'd love a custom Co-Motion or Independent, but I cannot justify the expense.
I'd advise someone to hesitate before spending too much money on a touring bike. The Co-Motion and Independent Fabrications bikes you mention are indeed beautiful, wonderful bikes. But functionally they don't do anything more than the Trek 520, Surly LHT, or REI bike mentioned here. What they do worse is make you worry about them. The Co-Motion Americano frame costs $2000. The IF Steel Indpendence frame costs $2300. You will spend more time worrying about the bike than enjoying the bike tour. You won't just lay them down on the ground to take a picture. You won't lean them up against a pole to go into a store. The bike will be more important than the tour experience. And the tour may suffer for it. Equipment gets beat up, used, abused, scraped, gouged on a tour. The $1000-1500 range is good for touring bikes. You get a very functional bike and maybe racks and panniers too.
Its counter productive to have too nice of a touring bike.