I played with Anbox earlier today and ran into a bit of trouble.
so, just an fyi for anyone that was gonna try anbox: during installation it asks to install a few packages and build a kernel module... it installs dbus-user-session which breaks gnome keyring (keyring doesn't unlock with user login) and will make chrome and skype, and any app that uses the keyring take forever to start or error out altogether. Removing dbus-user-session & rebooting resolves the issue.
I think anbox will be pretty neat in the future if things get ironed out, but right now, it's still pretty bare. 