Well I was asking @happy-diver because I expect he has a very concrete, no-nonsense reason for his setup, as a tinkerer of class, and I'm hoping to learn something. I can see that it would protect against abrasion, but I don't think abrasion is a big issue to begin with, and I wonder if there is some other aspect of it that is superior. Not having a triglide might have other positive benefits in his setup that I can't see from just the picture.