VLV search filter granularity

[gholbert at broadcom.com (George Holbert)]

If I set up a VLV index with a simple filter like this:

vlvFilter: (objectClass=posixAccount)


...then will the VLV mechanism benefit searches that use a superset of 
this filter?
e.g., if a ldapsearch is run with a filter like:

(&(objectClass=posixAccount)(location=California))

...will the vlv index help, even though the search also has a location 
specified in the filter?

OR, must I create separate vlv indexes with every possible search filter 
combination?

Thanks,
-- George