You must be right. I would have been thinking about the folds. The black silk knit I'm wearing at the moment knots very well and I had put that down to it being lined (in comparison to a similar looking but shitty to tie tie).
I just turned some of it inside out and it's the way it's folded that makes it work for me. And it has a bit of lining round the back of the neck. Warning: Spoiler! (Click to show)