There are three ways in which an object may be modified: 1) write/update by client, 2) handoff, 3) read-repair. A post-commit hook only handles the first case. By adding an "object modified" hook to the vnode all 3 cases can be handled in the same manner. After all in every case the ulitmate goal is to update the object and when the object is updated it's indexes should be updated as well.
Add notes about searching especially in regards to coverage and filtering.