True...I'd probably just use Regedit.exe, go down to the HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Interactive Intelligence\EIC\Directory Services\Root\[SiteName]\Production path, and Ctrl-F search for
publish handlers, then do the same for
manage handlers.
That will let you see each Role, Workgroup, and User with the rights, and do it pretty quickly since that attribute isn't there unless the Role/Workgroup/User has it assigned. (Default User will have it, but set to "No").
You could probably take more time and write a script or handler to do the same thing, if you'll want to do the search more than, say, 20 times.