Unfortunately this is also not working. It shows nothing at any page and when using the same conditional but preceded with a ! it shows the contents in all pages regardless if those are no permission pages.
I'm trying to do this in the navbar template, vBulletin 3.8.5
That shows it is working, preceeding it with ! means IF visitor (of any kind) is NOT a search engine then show everything inside the conditional, however if you were a search engine it will NOT show to you.