I've been doing some thinking about Google Scholar since the U of C became a participant in the beta institutional access preferences option. My institution uses SFX as its link resolver, and one of the biggest problems has always been getting students to understand that just because there's an SFX button after a citation in a database, that doesn't mean they will absolutely get the full text by clicking the link. What happens with Google Scholar and the institutional preferences is that on a select group of links ( citations to books and citations with a PubMed ID or DOI), results will have an extra link to your school's link resolver (though not a big clear button). It looks like this:
So I was thinking that once the UofC Access (née SFX) link appears on the majority of results it's going to be a lot easier for students to understand the concept of a link resolver working from the big wide universe (in this case Google) to a much smaller set of licensed resources. Right now they see the SFX link in one of our databases and assume that we have control over how it works and whether or not it appears (I have another thought on that I'll try to post in the next few days), but I have a feeling that when they see it in the "wild", it will be easier to understand that SFX is a service that attempts to locate the full text of an item based on what an individual institution subscribes to.