Replacing wiper blade rubber

I was thinking about replacing the rubber on my Dino wiper blades. On my Mercedes of similar vintage it takes a couple of minutes - there’s a metal strip that holds the rubber in place. You slide the metal strip out, replace the rubber, and finally slide the strip back into place. The Dino Arman&c blades have a similar metal strip, but one end has a notch with one narrow clip so there’s no way I can see to slide the strip out. Am I missing something or is It just not designed for the rubber alone to be replaced?