The groove in the blade makes two-handed opening very easy.
Yeah, it's also useful for the Spydie-drop. I put my middle finger in the hole and pinch the fuller with my thumb and index finger and it gives a really good grip to open the knife like that.
I understand why the knife is stiff and I actually like the stiff but manageable and actually kind of smooth feel it has now, but it seems like a lot of people would end up cutting themselves pretty badly with this knife because it's pretty hard to manipulate for someone who doesn't know exactly what they're doing. I guess most people would but it's pretty easy to have an accident with a knife that has such a strong detent and takes quite a bit of hand strength to open.