The only time I don't OC is when I have to go to school. I've been exclusively OCing in this state since 2007. I OC when I hike, when I take my daily run, when I buy groceries and when I go out to dinner. The vast majority of people simply do not react. Whether they "notice" is hard to say; does it enter into their vision? Does it impinge on their consciousness? Who knows?
My rough estimate is that something like .1% of folks have something negative to say, 1% of folks have something positive to say, 20% of folks notice but don't say anything, and the remaining 78.9% are completely oblivious.
Now, Virginia certainly qualifies as a "gun-friendly" state, but there are plenty of transplants in NoVA. Ironically, of the handful of negative encounters I've had, the majority were from "gun guys" (read: FUDDs) anyway. Also, my limited experience OCing in California was overwhelming not-negative (until OC was banned, of course).
I might turn it around and suggest that if you find reaction to be the norm, you are in some manner drawing attention to yourself before the gun even comes into play. (Not that I care or am criticizing you.)
Or maybe the negative reaction could be the fact that the majority of my negative reactions is due to the close proximity to the Minnesota border? Wisconsin sales tax is 2.5% lower than Minnesota tax, and we don't tax food as well. For those living in White Bear Lake, Arden Hills and Stillwater, we are close enough that what you save in taxes equals out to more than the gas required to get here. The Walmart where I had the negative reaction at sometimes sports more Minnesota plates in the parking lot than Wisconsin plates.
I suppose my age has something to do with it. Maybe the fact that I am from the hip hop generation and therefore get stereotyped could have a lot to do with it...I certainly get judged a lot.
But then again, I could say it a hundred times over and some of you would simply ignore it.