Just from my experience, I was also reprehensive about putting an Athlon on anything. I haven't had much good luck with china glass. I gambled and ended up getting a Midas Tac 4-16x44 for my 6.5 Grendel AR and it's actually not too bad, the price was right for the features I wanted (sorta...I wish it was illuminated now, but that's okay.) It seems to track well and get me to where I need to be I haven't done any box or tall target tests on it yet. I just finished working a load for it and got it in the Kestrel so time has yet tell how much I like it. Clarity is decent, not top of the line but it's better than I was expecting.
I figure when I feel like spending more money I'll buy a better optic for this rifle and put the Athlon on a 22 or something "cheaper" for the kids to practice with. I have other rifles that "need" optics/better optics before the goof around AR gets more money spent on it.
The gal that just made the 4200 yard shot, or whatever it was, had an Athlon Chronos on her rifle when she did it.