For a quick guide on getting the Ubuntu Touch Emulator installed and running check out the link below. Ubuntu Touch Emulator: Installation And Usage In Ubuntu 14.04, 13.10 And 12.04 ~ Web Upd8: Ubuntu / Linux blog.
Ubuntu have announced a new dual boot mode for Ubuntu Touch developers wanting to dual boot with Android, check the OMG Ubuntu article below for more info !! Original article : Announcing Ubuntu and Android dual boot developer preview | Ubuntu Developer.