Then why don't you guys just say that there is no way to be able to switch back.  How about possibly putting a notice if you switch to the old layout you will not be able to go back to the newer version.  This thread has been nothing but misleading and frustrating at best to try and understand.  For everyone saying hey just click the new invoice layout link, it's not there.  If you try a different browser or if you clear your cache it's still not there.