Lunar Knights screen swap code?

Has anyone successfully swapped the screens of Lunar Knights (ideally EUR, but as I'm playing in English, the US version would work as well) so the action happens on the top screen? I would like this partly because I am used to games' primary display being the top screen, and partly for use with Sono's widescreen TWPatch.

I have played the GBA Boktai games in widescreen with mGBA and think it actually improves their appearance - the games are presented in 'military axonometric projection' where any horizontal surfaces are rotated 45° but are undistorted, but vertical surfaces are significantly skewed, whereas when stretched horizontally they appear closer to isometric, where horizontal and vertical surfaces are equally distorted.

I understand that swapping the screens may make some parts harder e.g. the rail shooter sections, in which you touch enemies on the screen to shoot them, but this seems acceptable as the way it works in the base game seems like cheating - shots home in on enemies even if they change their position as they come towards you. There are also menus that *can* be activated by touch e.g. the world map, but they also accept button input. The transformation modes also have a touch button to activate, but it's clear which corner of the screen you need to touch.

I have tried these codes (switching which rendering engine displays on which screen), and found them not to work for this game:
14000304 00000FFF as suggested by Fast6191 in https://gbatemp.net/threads/action-replay-code-to-switch-screens.355486/
14000304 0000020F and 14000304 0000820F as suggested by habababa in https://gbatemp.net/threads/is-ther...e-the-ds-switch-display-screens.274089/page-2

@Sono, what is the state of the screen-swapping function of your scaling patcher? You mentioned in March in https://gbatemp.net/threads/twpatch...lters-and-patches.542694/page-59#post-8972416 that you've disabled it because it wasn't working well, especially combined with widescreen.