I assume this to mean that a quicklauncher process will remain for each individual application, but won't be re-created for a new instance of that application.
E.g. If you start then exit from opie-datebook, a quicklauncher process will remain behind. Then if you start opie-datebook again, the same quicklauncher process will be re-used (as it already contains the code, etc.).
Easy enough to test and see if this is what is happening (when I get home to my Z).
Si