Some people think it is strange when they see me carry a knife. Heck I am in my mid 20's and I had someone staring straight at my knife a ka-bar dozier for a good minute or two it seemed since I was standing listening to someone lecture us on a facility, this just happened 2 days ago. I don't exactly look like a thug either, as I am wearing properly fitting clothes and generally look like a productive member of society. I wasn't drawing attention to it, and in fact I was wearing khaki pants which match the color of this particular knife, which helps keep it a bit more hidden as it's not as deep carry as most of my knives which you usually won't be able to A) see on me which how I carry it B) or all you can see is the clip.
I have been in an Administration of Justice classes, this one in particular was on specific laws and was being taught by an attorney if I remember correctly, I asked him about what specific knife laws I need to worry about during class as we were discussing weapon laws. In particular folding knives as that is what I carry, as I know in my specific area I generally have to keep it under it's 5in or 5 1/4 whichever classifies it as a deadly weapon, 2 cities nearby have 3in limits, and government buildings have 2.5in limites. I wanted to know if there was anything else beyond this, this sparked someone attempting to rip me a new one as I quote "You shouldn't be carrying a knife, there is no need to do such a thing. It's dangerous. There's no need to carry a weapon!!" this went on for awhile.
My reply to her was something along the lines of this "I don't think a guy who is trying to find out knife laws and follow them is going to use it as a weapon, do you? In my opinion this is the best tool known to man. Beyond cutting things like boxes/packages I also am training to be a firefighter so I can tell you I can use this to help stabilize a vehicle in a car crash so the patient's don't get further injury, and cut seatbelts if I don't have a safer alternative, and a million other uses uses in an emergency. And I can list reasons to carry a knife all day long. Can you tell me 3 GOOD reasons to not carry a knife?". Yeah she wasn't able to convince me to say the least, best I got was still "You shouldn't carry a knife". I offered to put my knife away in my backpack if it make her feel better or even my car if I remember correctly. She didn't take me up on my offer (though that still leave the swiss army knife and leatherman micra on my keychain I had no intent on removing, that no one knew about).
What is also quite funny is we have people like this which swear up and down you shouldn't carry a knife, than on the other hand I have had a firefighter (instructor) rip the 2 people in our fire science class a new one for not carry a knife when he asked us if we were carrying a knife. Everyone raised their hand but 2 people out of a class of 30. I also it a little entertaining shortly after that we ended up having the 2 firefighters teaching the class showing off the knives they were carrying to each other, one of them referring to there's as a mini hatchet, which seemed appropriate the closest thing I could think of describing the knife is a kershaw rake but bigger as it was closer to 5in blade. And yeah this was strangely enough not inappropriate and no one was intimidated or uncomfortable by this. As this was one of more advance classes and this was part of the firefighter 1 academy so most of the class (minus a few of us taking things out of order) have already handled axes, chainsaws, sledge hammers, etc so a small blade is nothing in comparison. Not to mention pretty much everyone knew each other extremely well by that point.
My general rule for carrying knives is to conceal it when you can, which is put it in the small top front pocket on most blue jeans so it's not that visible as my t-shirt will just barely cover it majority of the time. And when it doesn't the fact that most of my knives have a black clip and handle and a wear a black belt will make it blend in unless your up close. Or just toss in a larger front pocket and the fact I generally get ones with deep carry pocket clips is usually enough to conceal it enough. But if I am in public and need to cut something I use it and put it as away when the task is done and try to open it quietly as flicking them opening draws unwanted attention with that distinctive "click" sound of one opening.