I am as much a "knifeholic" as a flashaholic. My knife "collection" numbers about 300. And as much as I look around I keep coming back to kitchen cutlery in terms of style. Here in Michigan we have 2 rules/statutes on the books. One mentions a 3 inch length limit for concealed carry and the other mentions "intention." So the Police tend to lean on the 3 inch part and the Courts tend to lean on the intention part.
I carry a small folder, usually a Victorinox, for small stuff like cleaning my nails or splinter removal. My main EDC is a modified steak knife in a sheath inside my waistband, on an angle. The best word to describe it is Arabesk (that's the first time I've ever spelled it). Picture an Arab or India guy in the movies with his short, curved sword tucked under his belt/sash, usually a long thin cloth tied around his waist. I have looked into a lot of carry methods and this has prooven to be the most comfortable. Being (almost) horizontal it bends with me rather than poking me in the gut as most sheath knives do. On special, dress up occasions I have a small Japanese Damascus blade in wood sheath that occupies the same position.
Oh the modification? I cut it down to just under 3 inches, 2.980 according to my calipers. It's overall shape is that of a Canadian Belt knife, designed about 125 years ago. But the edge is more Santaku. In Michigan you never tell a Police Officer that it is carried for self defense, the intention part of the rules mentioned above. It is a utility knife and I eat with it.
It is interesting to note that we, as Humans, have been using sharp edged tools for over 1 million years! A lot longer than using Fire. The animal kingdom comes self equipped with claws and teeth. So our knives are our claws, of course we carry more than one...