Massimo, this is a very artistic and provocative pano (in your post #437) !
Happy you like it! It is sometimes nice not to have a square border...
Quite recently, I was struggling to make a pano of a roof (the underlying woodwork) where there was not much room to spare, and I came out with this one (7-photo stitch):
I wasn't having a circular fisheye at the time (now I have 2), it would have been interesting to see the woodwork from a fish perspective...
Ciao from Massimo