I am considering an Isofrane strap for my Squale 1521 50 Atmos. It's a blue dial with bead blasted case. I don't love the rubber strap it came with, and am thinking Isofrane is a good alternative. My hope is to match the buckle to the bead blasted case (or close to it). The IN buckle would match well, but isn't available for 20mm strap. The website says the RS strap is 'brushed' but every picture I can find shows a more polished look. Does anyone have an RS buckle, and if so is it polished looking or does it have a more brushed look? I appreciate it.