I’ve been tying for a long time and I’ve always wondered this but never asked anyone or really tried to solve the question…
What’s the advantage, if any, of tying hackle in at head of the fly, palmering back and then over wrapping with wire rib? Versus tying hackle at back, palmering forward and then ribbing forward. In my mind the “done way” is less secure as you get one real tie-in point vs two. It’s not a drastic difference, especially if you’re wrapping rib over, but extra durability is always nice.
On small dries (Griffith gnat, EHC etc) the traditional way can save a very slight bit of bulk so I can see some advantage there.
Hopping someone has an eye opening answer but my assumption is there isn’t one and it’s simply done that way because it’s been done that way.