Although I only one one (a Case 31048), the slimline trapper is a pattern that calls to me, despite my preference to multi-blade traditionals. Knives like the Queen #11, the GEC 48, and Canal Street half moon have been singing their sirens song to me for a while. I usually prefer something in the 3.5" size for a traditional pocket knife, but the skinny profile of the slimline trapper makes up for the extra length.