((binary removed as it's out of date now))
After figuring out how to do this on a Mac, it was easy to do for Linux, too. LL says the Linux viewer is 'beta' software, so this is beta, also.
I haven't really tested it, my little ubuntu laptop is ancient and can't run Second Life. But the app starts and gives me the option to log in, so I think it's working. Please post a comment if it does or doesn't work for you. You can download it here.
879080556 43892204 RestrainedLove-linux-18.104.22.168.tgz
I touched the install a little bit so it'll say 'Restrained Love' rather than 'Second Life', but I don't think you can have both v2 and rlv installed at the same time.