Welcome to Arizona and the OCDO forums!
It sounds like you had some very positive experiences so far, you'll find that the not noticed/ignored reaction to your sidearm is pretty much the norm here.
If you do get noticed, it's usually to ask the make/model or caliber that you're carrying.
Most of the negative reactions you'll get are from transplants who haven't gotten over the sight of openly carried firearms. Just smile, nod and act like it's just another beautiful day. How you carry yourself and react to others sends signals and effects how they react to you.
Check out AZCDL, a great organization fighting for our 2A rights.
Welcome again to AZ, carry on and be safe!