Sometimes.
I used to carry a wide assortment of traditional pocket knives, like a stockman, or sodbuster, or peanut. Then a few years ago I did a major downsizing and gave most of my knives to the kids, nephews, grandkids.
Exept for the sak's.
I had reached a point in my life where I didn't need a lot of possesions, and what I did have, I wanted to have maximum utility and versitility out of. The sak's made the cut. I like the one and two layer sak's like the bantam and waiter, and if I go two layer I have the recruit, and for heavy duty the Wenger SI. But no matter what I have in my pocket, my classic is on my keyring. Over the last few years the classic has become my favorite sak. It's ALWAYS there, even on trips. When flying, I stick it down among the stuff in my shaving kit, and it's always there when I land. It's opened packets of mustard for a sandwich on the beach in Key West, plastic food packages in southern Germany. I made a little pouch style leather sheath for it to go on my keyring, so I just grab the split ring and pull out. Since I carry my keys on a carabiner clipped to a belt loop by my right hip, its easier to reach for the little classic in its keyring sheath than anything else. It gets used for about 90% of my pocket knife chores.
When I do cheat, it's with one of my Case peanuts. I can't help it, I'm addicted to the pattern. Maybe growing up with a father who carried one as his only pocket knife has something to do with it. I have a bone stag one, a yellow handle one with CV steel, and a chestnut bone one with CV. They are like my pocket jewelery. But most of the time these days, I'm carrying only my classic on my keyring sheath, and a bantam or recruit or waiter in my pocket.