ontario 7" old hickory butcher knife.
I am going respond why this is a good choice. Then I will explain my dilemma in choosing just one knife.
One of my mentors was 101st airborne. He ordered two Glocks, one for his girlfriend in her late 60s. I suggested an an Ontario Old Hickory 7 " bladed butcher put in a $12 Mexican sourced ka-bar leather sheath. I explained that she had no military skills and would basically be around the camp. She would not have a desire or need to dig a fox hole. They are rural.
The dilemma I have is that I am urban. That fact outweighs my skill level. I don't want a knife that anyone can see that I am carrying on my person. It means no external signs. No external sheath. This narrows my choice down to only three knives, in no particular order:
1. Fallkniven F1 airforce knife in the ugly, ugly factory sheath. I can carry the sheathed knife in a pants pocket. I have carried the knife this way in a Brooks Brothers suit.
2. Buck 110. When folded, it can serve as a yawara stick.
3. Spyderco Police model, plain edge. Not as good functioning as a yawara stick as the Buck 110. Heavy, substantial knife. Have a few used ones with the combo blade as well.
Situational awareness counts. It doesn't matter that I have a Fallkniven A1, an Al Mar Sere, an Ontario Mark 3 dive knife or a Glock knife. It has to be concealable.
What I carry in the car is a different matter. Because I am urban and old and know that the traffic lights will be out and people panicking, I am going to ground in place, for as long as a week. I would not attempt to rush home, on foot, or in the car. So, there are a number of knives to choose from in the car. If I have to stay in place, I will worry less about concealment. I won't be concerned that I have a survival knife capable of chopping down trees. It would be a fixed blade with a blade length of 5 - inches.