He chose the wharncliffe due to his testing. In his testing, he found that grind to be superior for cutting through rather than bouncing off hard targets. I'm probably not wording it well. For his self defense method, he found through testing it works best.
The "fragile" tip is myth that refuses to die on the forums. Many perpetuate it but no one steps forward with pictures showing it to be true. This isn't an attack on Mr. Yablanowitz, he did clarify his uses are not ordinary.
The Yojimbo's strengths: MBC rated lock, light yet strong construction of high grade materials, a large finger choil that aids in many ways including retention, a sloping handle that decreases in circumference near the butt end which aids in grip for the weaker and shorter pinky and ring finger, triangular blade which aids in strength of the triangle, Spyderco grade G-10 to aid in retention, a small butt tip that aids as a striking/pain compliance tool, the small butt also makes the knife look like a fat pen when in the pocket.
Downsides: large shiny clip acts like a fog light to draw attention to it in the pocket, the large pivot area can make it hard to retrieve other items when the knife is in the pocket...that is about it for me.
Cost closeout here for $87
closeout
