Specify axis ordering for specific facet in multi-facet plot

Correct me if I am wrong, but it is not possible(?) to create a multi-facet plot with continuous facets where one of the facets reverses the x (y) axis in a particular facet. For example if I have:

df = pd.concat([
    pd.DataFrame({'x': [1, 2, 3, 4, 5, 6, 7, 8], 'level': [2, 4, 9, 25, 36, 49, 64], 'pane': 'left'}),
    pd.DataFrame({'x': [1, 2, 3, 4, 5, 6, 7, 8], 'level': [1, 3, 8, 24, 30, 40, 55], 'pane': 'right'})
])

(ggplot() + 
    geom_area(aes(x='x', y='level', fill='pane'), data=df) +
    facet_grid(". ~ pane"))

Supposing that I want the 'left' pane to be ordered from 8 downto 1 and the 'right' ordered from 1 to 8, is it possible to accomplish this in the same ggplot()?

Start with the facet_grid entry point and reproduce the supplied geom_area example to inspect how continuous facet axes are ordered. Determine whether per-facet reversal can be specified independently, and define completion as supporting the requested opposite ordering for the left and right panes in one plot, with coverage for that behavior.