Comment 2 for bug 1600154

I think as a short-term solution (until we have proper confinement in gsettings itself), that's a way to circumvent this issue.

Currently, the interface doesn't really work and that makes you require using the "home" one to do this trickery (and I would prefer we avoid doing this).
You may have better ideas though? (I fear the options are limited as the gtk/glib applications mmap this file to read values).