Hey - That works great, but if you have save sets running when you run that query, they will be displayed, as well.
Along with incomplete, consider using the ssrecycle query, as any aborted save sets should be recyclable right away.
For example:
mminfo -q "savetime > yesterday,ssrecycle" -vot
Obviously, ensure your retention times don't conflict with your query times to avoid false positives.
Good luck!
-ag100