I couldn't tell you how much a customer's idea of a given pattern
deviates from the standard(as tied by the originator)!
Tom

Tom, here's an astonishing (to me, at least) example of a "deviant"--

If you tied a dry fly with a tail of golden pheasant tippets, a body
of peacock herl with a belt of red floss, wings of white calf, and
dark brown hackle, what would you call it?

If you said Royal Wulff, no, according to A.K. Best, it's an ADAMS!!!!

If you don't believe that, see page 37 of the latest (March 2005)
issue of Fly Rod & Reel.

vince