You're right, I should have posted my initial response with different wording. My intention was not to disparage Pastortd's work because his tying is impeccable. The intention was simply to have the Glasso dressing as originated and tied by Glasso himself displayed and the dressing listed (Glasso tied on Sealy low-water hooks, which are no longer available. The Partridge Barleets were not on the market when Glasso was alive, they came after Alec moved his hooks from being made by Partridge to Daiichi around 1989). That is why I mentioned in a posting other than my first one on the thread that Pastortd is an excellent tyer.
A fly should be tied true to color in body, wing, ribbing, tail, butt, hackle, tag, etc. Wehter you use calf tail of polar bear or artic fox is of no consequence. Iis a Jock Scott any less a Jock Scott if tied with a hair wing composed of hair comprised of the colors of the original feather wing Jock Scott, of course not! Nor is tying a Purple Peril on a tube instead of a hook changing the fly, it is still a Purple Peril if it uses the same colors for body, wing, hackle, etc.(Stu this is what you were getting at, and you are correct.)
However, if you use black bear hair for a wing on a "Green-Butt Skunk" it is no longer a "Green-Butt Skunk". changing the wing to black turns the fly into a "Green-Butt, Black Bear" (a fly well-known to Atlantic Salmon fishers in North America). Likewise, changing the purple body of the "Purple Peril" to something close such as burgundy changes it into a different fly from the "Purple Peril".
In similar fashion, leaving the tail and topping off of a fly does not change the fly into a new fly or into an already existing fly of a different name. It is still the original fly tied as a variation. There is nothing wrong with doing so; however, the tyer should acknowledge that it is a variation of the fly and not call it the name of a different fly.
Nit-picker, no. A stickler for accurately naming a fly, yes. Otherwise, confusion reigns and we have no way of knowing what someone was using if he says he was using a Purple Emperor instead of a Neuron Cherry Bomb Spey.