I enjoy my Fuji X system camera and the colours it produces. Sometimes, however, I'd like to do some RAW processing in Linux (Darktable) - but of course this means that I lose in-camera film simulation.

Since the camera can store the same photo in 2 different formats (RAW+JPEG), I'm wondering if it would be worthwhile to use a lot of these file pairs to try to get a LUT allowing to map Fuji RAW files to Fuji-Like JPEG results.

Is there anybody knowledgeable here to tell me whether this approach is doomed from the start or if it could be promising?