I'm with 'ya Christian, tip-up! On the first Terzuola collaboration, the C15, it was drilled and tapped for both ends. That would be nice. In fact Sal, it would be nice if all of the Spydercos (at least those with the right type of clip) were drilled and tapped at both ends of the knife for the user's choice. Even though it voids warranty, I end up drilling and tapping knives myself because the factory didn't do it for both ends. I'm a definite fan for tip-up carry, but that is TOTALLY a personal preference.