I wasn't going to return mine either. Never had any issues with POI shifts or battery life and still love the reticle. Course I live in gulf coast TX, so it was never subjected to cold environments. Hotter than hell, but never anything near cold.
However, last time I grabbed the rifle to put up, before heading out of the country, it wouldn't shut off and had to pull the batteries.. Was glad to see a recent post in the returns thread, so as soon as I return stateside in a couple weeks it's going back.