Thanks for the responses. I'm only interested in the Cresta out of intellectual curioisity.
In regards to tubing: the Cresta Nomade GT Tour is CroMo - not aluminum... The Nomade Tour is aluminum.
I don't live in Switzerland, but, I also don't live in the UK (sort of wish I did though)... so, that isn't really relevant, nor is the langugage I speak, nor the language the bike manufacturer speaks. Geometry is geometry, metallury is metallurgy, and components are components, regardless of the respective language.
It is true Thorn offers you a 'trial period', but as mentioned, only for a full bike. I'm sorting through how much I'd save to simply buy the frame, then have it built up over here by PeterWhiteCycles.
But in the end, the Thorn line, appeals to me the most (for expedition tourers). The attention to detail and workmanship (with potential exception of the paint job - not based on any personal experience) is first class, and it is obvious Andy has done an excellent job of translating real-world experience into a cohesive expedition tourer of the highest quality. I'm somewhat interested in a Roberts RoughStuff, but not enough so,,, and of course, Mathers is no longer 'building'.