I've been asked to look into whether Swish-E can do something like Google
Directory, where every page is assigned
a category within their Google Directory hierarchy and this category is
displayed in the search results.

Is there a way to make Swish-E do this?  I was thinking of metatagging each
page on our site, setting it to the category
and then having Swish-E index it as a property and display that property
for each result.  Is there a better / more elegant
way to do it?