mrodenburg on "[Plugin: WordPress SEO by Yoast] Automatically use Meta Description as Excerpt"

Not a plugin issue, but more of a technical question.

I would like to automatically use the Meta Description for the Excerpt. The other way around, I can find lots of ways to achieve it. But to automatically fill in the Excerpt with the WordPress SEO meta description, no luck there in making it work. Does anyone know how to do this?

http://wordpress.org/extend/plugins/wordpress-seo/