I was on their demo page and couldn't search for anything. This is more of a search functionality. The feature I'm proposing add a tab called "Nearby" in the Members, Groups, and Events pages. When click on, it will show members, events, and groups that are near the user zipcode which will be required in the profile question if the admin decided to turn on location service feature.
Unless I'm seeing something different maybe you can demonstrate how this plugin you suggested works searching for members, events, and groups near you.