Not sure if Safaristand has man page search, but there's always Bwana.

Want to search Google for "iPhone release date"? Bypass the google homepage and just type the following into your Safari address bar:
g iphone release date

You can do the same thing for any site on the internet. It works extremely well, and it's FREE! You could be saving yourself a lot of time.

The new "man:" protocol feature is excellent. Just enter "man:grep" into Safari, or man on anything else you want to check, and Safari will open the page via man2html.

on second thought, i now realize this is redundant in relation to safari stand.

even better idea than having the search box have a drop down for different engines.. plus you can add your own. for example, i added my blog's own google custom search. how cool is that???