Still no luck. I tried having the same weapon (with the same illusion) equipped and did not see the new emote. The emote ‘pose’ is the same as before, but I am not sure if I should be expecting this to be replaced or a new one showing up.
In my case the issue was obvious in hindsight, i was using the old menu which doesnt support the selection of weapon poses, or the illusions.
And even after that, i did not think to see if there was a “next page” either.
With those done and out of the way, just equip the weapon, open emote wheel and go to the next page. Various poses should be there. Though mind, i personally found a bug trying to apply the eternos skin to the javelin. It crashes the game and does not apply the illusion for the versus end screen.