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Martin, I think you are bordering on a kind of interesting surrealism in that first photo. Go with it, do more!
Vertical panos are relatively rare... it seems a good area for further work and thought. The work of Danny Burk comes to mind:
http://www.dannyburk.com/panoramic_photographs.htm
But... I'd say think some more about the surrealist aspect, that looks promising. The typical vertical panos one sees have features aligning fairly predictably with the frame... trees, waterfalls, buildings. If you find a way to step out of that mould (such as the last one you posted, which relies strongly on diagonals) then you may have something very fresh.
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martin, the last image is mindblowing. this kind of panoramic photography is very difficult.