I haven't done a project in years WITHOUT using Advanced Custom Fields. It's an essential plugin. It should be integrated into the WordPress core (for admin level users at least). It makes WordPress a million times more useful and flexible as a CMS. I never build a site WITHOUT it anymore. Ever. So as awesome as this front end editor plugin is it's of no use to me since the only thing is can work with is the_title() and the_content().
And Elliot's "Live Edit" plugin can't compare. It's really not that great. There's certainly nothing "Live" about it. You get this huge secondary edit pane and you can't even see the changes until you click update and refresh the browser window. Would be awesome if the authors of these two plugins could get together and figure out how to add support for front end editing of ACF fields... either through an ACF add-on or some other method. I would TOTALLY pay for a "Front End Editor" ACF Add-On. At least $30 to $50.