The steel in the skeletonized version is bead blasted AUS-6. The steel in the micarta scale version is VG-10 satin finish.
Nakano & Rugger, the position of the point is more center than it might appear. You'll have to get one in your hand to know what I'm talking about.
MDP, I considered your request for a larger hole than the Perrin LaGriffe. However, in circulating prototypes to "zero in" on a hole size that would accomodate the most hands, we ended up with a 23mm hole which is very close to the Perrin size. Apologies.
sal