Windshield Mylar install Question

I'm getting ready to install my windshield and rear window and I've been looking at some "how to" Youtube videos and noticed in one of them they installed the mylar strip in the seal before they installed the windshield it self in the car. It was beening done on a old VW rabbit converitble but it's same type of seal. Has anyone done it that way?

Here's link to the video I was talking about, different car but same type of seal: [ame="http://www.youtube.com/watch?v=bvAbUVbuyEs"]How to Install a VW Rabbit Windshield Seal on the Windshield - YouTube[/ame]