University of Michigan is participating in the TIER Campus Success Program.
Follow their blogs here. As of Feb. 2018 they are off to a great start in sharing their Grouper journey:
Groveling before Grouper
In addition, University of Michigan presented on their Grouper deployment at the Feb. 14, 2018 IAM Online webinar. See the slides: https://www.incommon.org/docs/iamonline/20180214_IAMOnline.pdf and recorded webinar: http://internet2.adobeconnect.com/p03kw4etow2t/