All in all my experiences have been good. I've only had one place of business ask me to leave. Something I've noticed is that people are honestly not aware of their surroundings. I've had people pass me on my strong side and not notice my gun (I wear it at 4 o clock) until they are past me or I turn for some reason and it's right there.
I can hear people whispering sometimes, but I just ignore it, if they have a question they'll be an adult and ask. I've noticed that the manager at PetSmart smiles when he sees me carry in his store.
I migrated here from Washington and it's open carry up there I just didn't exercise it, so far I'm really enjoying Arizona.