I've carried traditional whittlers of various brands for the last 70 years. My major problem with them is that they fall through holes in my pocket or work their way out when I sit. Lately my favorite knives have been a small sabenza rotated with a small inkosi which I keep clipped to my pocket. For a change of pace, I carry a small barrage but that may be illegal in your setting. What I like about whittlers is that the three blades fit every situation I face from cleaning or shaping a finger nail to opening boxes. I feel undressed when I don't have a knife in my pocket. Luckily, the only time I've had to dispose of a knife in an airport was a cheap one I had bought as a fill in at Home Depot.