Believe it or not, silicone (Armor All) is not the best thing for rubber. I worked 27 years in a synthetic rubber chemical unit and we used glycerin as an additive to the synthetic rubber. It was a modifier to make the rubber more pliable.
Is that a Mk2 Jetta? If so, I'm getting ready to replace my drip strips as well. What removal/installation techniques are you using? I read that those drip strips can bend easy because they have a metal band inside of the rubber.