$Man that is a very interesting read.
I have been shooting 4" feathers forever but recently fletched a half dozen arrows with the 3" Fusion vanes. Out to 50yds they impact right in there with the feathers, and I have to say that they make the shot a lot quieter.
I haven't shot them past 50 to see how they compare at longer range.

And as far as durability - - They dont come close.

Like Barry said - feathers can be mangled and soggy and still not throw you off by much - if at all.

Shoot an arrow with only 2 Fusions on it and you will be searching for it.

Over all - I'll probably stick with feathers.