Very cool, I don't suppose this will allow one to change the dialog in hybrid/non-DM environments also? I use Openbox with a mix of KDE and GTK apps and this is one of the more common annoyances. I looked into this a while back and couldn't find any info at all.
This depends on what `xdg-desktop-portal` DBus service is running on your setup. In most non-DE environments, there is no `xdg-desktop-portal`, and as a result, GTK will automatically fall back to GTK file selectors.
If you'd like to use KDE file selectors in a non-DE setup, you'll need to get `xdg-desktop-portal-kde` working.
