I separately emailed Martin this same question. He was kind enough to send me a link so sharing here.
The below link provides an example of using OpenSCAP to consume RedHat data on vulnerabilities in RedHat Linux.
This may seem terribly obvious to experienced Scappers, but it is only obvious once you see it. I know this because some colleagues some colleagues of mine need to do a "vulnerability scan" for a government client and were looking at Nessus because they thought OpenSCAP was just for checking configuration. It took me a bit, too, to make the connection.
Looking for more examples and documentation as this would be a useful thread for us newbies...
Greg Elin