Making a "loupe"

[osteoderm]

When I first read about Loups, I thought, "Aha, a modern selvagee with a cover!". I'm curious if anyone here has had experience using modern HM line in traditional siezings and lashings.
I've seen plain old nylon seine twine lashings perform remarkably on traditional boats (when correctly applied); why not similar lashings in modern smallstuffs on modern boats?
Whether it's making a grommet/Loup or applying a seizing/lashing, operator skill and experience is important. I get the impression that pre-made solutions like the Loup are out there because, while the materials are improving, some of these traditional skills are vanishing.