I'm trying to decide between Gascan and Fuel Cell. If my measurements are correct, Gascan is closer to Monster Dog than Fuel Cell, and they seem to offer more color selections. I'm looking at Fuel Cell Steel Flags w/ black iridium, Gascan SI Milspec green w/ black iridium polarized, and Gascan matte w/ ice iridium polarized. Which finish would be more "durable" plain matte black or the cerakote finish? Is there any difference between black and ice iridium polarized from the perspective of the person wearing them?