The picture below is typically what I look like on a daily basis. I've been carrying this knife for about a decade here in urban San Diego, in all sorts of places. No one has ever said a negative word about it, nor have I ever noticed any negative reactions, and that includes several cops I have crossed paths with. But of course, I don't go around looking for negative reactions.
If you go looking for negative reactions, chances are you'll notice them, even if they're not really there. I think that some knife enthusiasts are very self-conscious about their knives, or they suffer from a persecution complex, and they think people are looking at them, or judging them, even when they aren't.
If I ever do encounter a negative reaction to my knife, I will ignore it, because that's the way I am.
In contrast, I have experienced several positive reactions to my knife. Like the time I saw this young couple trying to tie a Christmas tree to the roof of their car. They brought twine, but forgot to bring something to cut it with. I watched them struggling and felt sympathy for them, so I stepped forward with a big smile and offered to cut it for them. They were very appreciative (the guy said he was just about to try and saw through the twine with his car key). And that's just one of many occasions where a stranger has had a positive reaction to my knife.