The 'Jagdkommando Integral Tri-Dagger' is a controversial knife because its twisted blade is intended for killing only. The design of it essentially saves a step in the killing process. With a straight blade dagger, a person must stab and then twist. This dagger combines the two for a clean and efficient kill. When sheathed and flipped around, it also acts as a glass breaker.
Nevertheless, people feel that the Jagdkommando Integral Tri-Dagger should not be sold because of its sole killing purpose. But, because of its improved design and the fact that "many weapons [already] exist for the sole purpose of killing: guns with hollow-point bullets, sniper rifles or even the WASP knife," as observed by Oh Gizmo, these concerns are unfounded.