multiple monitors - Ubuntu Gnome (w/ Wayland) - install desktop with X?

UPDATE: Ubuntu 18.04 is back to X with an Ubuntood version of Gnome which can be replaced with the stock version using sudo apt install vanilla-gnome-desktop

I have a System76 laptop with Ubuntu GNOME (17.04). Ubuntu GNOME uses wayland.

I also have a USB DisplayLink adapter that powers 2 external monitors.
That adapter connects but is unworkably buggy (as in no image). Displaylink is working on wayland support but it's not ready yet.

Is there a way to easily switch Ubuntu GNOME from wayland to x?

Or install an alternative desktop that uses x on the side?

Or otherwise shim some X into wayland so I can use this adapter?

I prefer Gnome, but more prefer multiple monitors with this USB displaylink, and even more prefer not reinstalling.

Thanks!