Could it be possible that the Archons (our Scions) will somehow get the echo eventually?

People aren't born with the echo, but are spontaneously given it. We know from the Sahagin priest that whatever Lahabrea taught him allowed the priest to gain the echo and body snatching capabilities.

What really struck me was the Roegadyn Archon who was said to be the "reincarnation of Rhalgr" Iceheart proved to us that an echo user can be the host of a supernatural being. So is it too far-fetched to think that Archon Ahldbhar hosted the essence of Rhalgr himself?