The wear of the flying line sitting in its seat is much less, when it sits in a dynema seat.
Metal (even a simple ring) causes much more abrasion to the flying line (sleeve). You kept that in mind?
The lockline (or organizer line) is not under special Load during the event.
The flying line is under load during safety event - which is a good thing, cause slipping is easy for the lockline.
The lockline is just pulled by the snipping barsystem and is "hold" just by the resistance of the slipping itself (with is almost nothing):
There is nothing to put a special load on the lockline, it can freely move outwards.
So the test of Herman is interesting (must be good, even Bear Grylls uses this trick ), but fortunately it isn't comparable to what we are talking about, in this setup.
Ok, time will show. I'll report my longtime experiences.
Interestingly I have some, already: I used a safety, made of a small nut, kept by a steel chain element, wounded by a thin dynema line, to protect the flying in its seat.
No abrasion on the dynema/dynema seat, but some on the dynema/metal (inner) side of the 'lock apparatus'. Still worked for a season for me, until the metal part cut the little wound lines from the inner side.
You'll find that apparatus here (which I don't recommend any more, cause the actual is waaaay better):