It's available through apt-get in Ubuntu and Homebrew on OSX (and probably other package managers, too), and should work anywhere that FUSE does. Doesn't require any special configuration on the server-side except to have SSH enabled (and not be doing anything weird that blocks SFTP, I guess).
What I've been doing instead is using the rsync-ssh plugin https://github.com/davidolrik/sublime-rsync-ssh
I keep a local copy of the repo, which allows me to work even without access to the cloud dev environment and makes searching orders of magnitude quicker, but still saves changes to the remote environment whenever I save a file in Sublime.
It's not perfect, but works well enough for my current workflow, so thought I'd share.