The only scene where I remember the creature being shown asleep with closed eyes was the Escape scene. Which is well after where Rich said "nothing so far contradicts," and where he might have been faking sleeping to avoid Xykon's attention anyway.

Which isn't to say that the consistent two eyes aren't a con for the protean, I do consider them one, but not enough of one that I'll be astounded if he turns out to be a protean regardless. Much more of a problem for the uvuudaum never mind the uvuudaum's description says nothing about lacking eyes and Rich isn't beholden to other artists' interpretations of no text.