Possible to have motion controls passed in cemu (or yuzu) with bigbox + steam?

[klepp0906]

So I have a relatively convoluted set up.  One ive made work almost entirely without caveat up to this point.  I use the steam link app on my nvidia shield to launch bigbox and use bigbox at that point to launch my games directly while being able to use custom maps on a per emulator basis.

these are all/always have been xinput.  ive written off games that use motion controls more or less until this point.

I recently discovered cemu and yuzu baked in native motion control support (not requiring cemuhook or ds4windows etc) and all you needed to do was have a controller w/ a gyro (ds4/dualsense for example) and enable SDL controller in the emulator(s).

I started mucking around with it ala cemu and I can get controller input in the emulator, but the minute i launch bigbox and/or bigbox through steam its DoA.

anyone using something like this with success motion-control wise?  Is it going to be possible or is launchbox limited to xinput or steam hijacking and converting everything to xinput and as such killing the sdl controller mappings from working period?