I don't see a huge difference between installing a product or a plugin...it makes no difference to the function of the mod? Its just the difference between what link you click on and scrolling
If your using mine and his in conjunction...you need to edit his plugin on the forumbit_display hook to the instructions specs and do the template edits...otherwise you can uninstall his and install my plugin (no real loss of function on the front end...and probably recommended for the inexperienced updater rather than editing the plugin)