One of the requests we've received more than a few times is the ability to use Launch Effect while working on a different theme on the same WP install. We're still a few of months away from introducing a Launch Effect plugin that would allow for this, but we recently came across a plugin that makes it possible for you to have a Launch Effect page up while working on something else.
Theme Test Drive
Installation was straightforward--your typical plugin install on WordPress. Our goal for this test run was to work on the Twenty Eleven Theme on the admin side while visitors would still see our Small Poodle Club Launch Effect page. We left the activated theme as Launch Effect:
We then went to the Theme Test Drive settings tab and selected Twenty Eleven under "Usage":
We left the access to be admin-only (level 10) and then clicked on Enable Theme Drive. This made it look as though Twenty Eleven was activated as the theme on the sidebar navigation, which would make it possible for us to work on theme.
When previewing the site as admin, we saw the Twenty Eleven theme in action. We opened up a different browser and, voilà, The Small Poodle Club was still up and fully functional.
A big shout out to our user NS on our support forum for first bringing this nifty plugin to our attention.