I carry two knives daily. A Swiss Army Ranger and a Spyderco Paramilitary II. I carry the SAK in my left pocket and the Spyderco in right.
I have a thing for 91mm SAKs since that's what my Dad had. I lost a few and stopped carrying them, people using my knife and not returning it.
Now I seven. I got back into carrying them after I started carrying the Paramilitary. It's not something as innocuous as a SAK.