Just asking a question and wouild like to hear if anyone tried any 'non-scientific' test using any of the materials mentioned. By 'non-scientific' test I mean: Has anyone taken a fly, with the the body material described, and fished alongside someone else who was using the exact same fly that had a standard body material? Was there a difference in the 'takes' and were the abilities of the 2 fly fishers roughly equivelant?
A friend and I did this with a different natural material and there was a marked difference so I know that an un-scientific test can show some type of effective result. But has anyone tried to perform a test with the materials being discussed here?

Allan