Athlon Ares 15 vs 27x

I take it the reason no one has mentioned the Ares line is they are not shipping yet? Which makes me wonder how some websites say they have stock. But Athlon did release scopes to test out in the field and I was wondering if any got their paws on one.

My main question, how much different would the 27x power model be in eye relief than the 15x? Is it going to be more sensitive through the entire range or just past 20x power or so?

I also wonder how much bigger the reticle gets compaired to the 15x model. Any thoughts? Actual users feel free to chime in.