I believe it's rare to have the omni narrator a character in the story. I believe that would be written in 1st-person..
Maybe you only have two wayside to tell a story, but believe me, there are thousands.
When I'm writing, no matter whether if it's first, twenty-third person or 3rd Omni, I always have a feel for who's telling the story, even if they're never identified. My narrator in "Stranded" was an incredibly paranoid wac-a-doodle, that had few similarities to me as the author. Instead, I put myself into a paranoid 'frame of mind' in order to write the story. When I wrote about Alex fooling around with his sister, Cate, in my "Catalyst" series, I wasn't writing about my own dark fantasies, but was addressing where the two originated from (sorry, you'll have to read at least 4 books to understand). In fact, the entire "Catalyst" was written from the POV of one character, although you don't meet her until the final epilogue.
Authors are not either their characters nor their narrators. If Ernest sets his stories in America, and uses American spelling and phrasing, does that mean that he's an American, since 3rd Omni is always told from the author's perspective? Or does he simply slip into a fictional personna in order to create a convincing story?
I refuse to be defined out of existence. I write my stories, not based on my own POV (though that has a lot to do with which stories I pick), but on the needs of the story. But then, as the article stated, I write in 3rd Omni because I'm trying to capture an 'Epic' adventure, which really doesn't work (as well) any other way.