Deadeyes vs just lanyards with HM materials

[Bott]

One follow up:

If one wanted to use more traditional deadeyes and lanyard materials (more like polyesters instead of HM line), would anyone expect adverse affects from the cow hitch (ring hitch, larks head) across the top of the upper deadeye (the "standard" tie-off method) pushing down on or crushing the Dux between the lanyard and deadeye?

I imagine one could/should be prudent and put a cover on the dux for chafe down there, but is the compression on a flat face something to watch for?

Thanks again.