How would I go about installing Artix/Arch Linux onto the same device as its installation media? Or can I just use the live environment as a fully-functional OS? Only ever used ubuntu and fedora (and only ever used their installation media for installing straight to disk), but I want something lightweight that doesn't take forever to boot that I can run off a USB flash drive for testing computers I work on.
Also, if the base live environment can be used as a fully functional OS, can the graphical editions (in the case of Artix at least) as well?