TNB, have you ever tried Origins Oil-Free? It's a liquid that has some kind of clay (?) in it to absorb oil. It'll take me from a grease slick to matte in 1.5 seconds once I apply it. I've also done my eye makeup with a primer, etc. like you do, but once I'm done with it, I apply it over the shadows. The shimmer doesn't go away, it just absorbs the oil and can keep my shadows from creasing most of the time.
Correction: It is called Zero Oil. The mattifier in the liquid is apparently silicates from what I'm reading on the site. Picture below of what I'm talking about.