I Love my XM 18 Spanto Grind non flipper. I am going to order a second XM18 flipper, leaving me with the blade grind debate. I wonder if the spear point blade would be more aggressive in a self defense role. I know Rick's blade geometry is brilliant! I think you get the best of both worlds with the Spanto blade. Any opinions on the piercing capability of the Spanto Vs. the Spear point blades.