From the unstapled challenge.
Closeup and shoes (Click to show)
I can see both sides of this: I like the symmetry and size of a windsor with a spread collar sometimes, but if the tie's a bit thicker or the collar not as wide, the FIH fits fine. There's just something a bit casual and boyish about it, though, so I have to be in that kind of mood.
As for the DFIH, I've adopted that from SF but only for knits, where I find it gives a cool kind of conical thing without stretching the tie about too much. I don't like it on ties with a tighter cloth as it gives a knot that looks stubby and square-ish to me.
So if a windsor is too big or too stuffy, a FIH is too small or too scruffy, then may I recommend a Pratt/Shelby? I like that it's symmetrical and neat - very business - but it's not fat and bulky like a windsor as it lies much flatter. It's definitely my regular go-to for work dress.