I don't see a lot of OC experiences yet on this thread (hint hint) so I'll add some of mine.
OC when I can and have only experienced the following reactions:
Hendersonville Target: bicycle cop leaning against front outside was doing a Roger Rabbit (according to DW walking about ten feet behind me) but did nothing.
Another day at the same Target I was assisted by a male associate, who exclaimed "Oh, you're packing," which led to a brief discussion how he's had to explain to other associates in the store how it's legal. Overall a good encounter.
Gallatin Lenny's Sub Shop (great subs): manager was super nice and had a nice chat with her. During the discussion her eyes dropped several times (hey, eyes up here!) but otherwise ignored it.
Burgess Falls State Park: starting down at the top of the largest falls I met a ranger and an assistant walking up on the narrow stairway. The ranger seemed to be looking for me because once he saw me his eyes never left me. Once he looked down at my Glock he stopped (too close, tactically, it felt), unsnapped and placed his hand on his weapon, stopping me. He said "I'd like to see your ID and permit." I replied "as I would expect you to (or something else as stupid), drew my ID wallet that had them both in windows and presented it. He gave a cursory glance, thanked me by name and returned it. And that was all the longer it lasted.
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