Is it possible to integrate pdfsandwich into XSane?

Is it possible to integrate pdfsandwich into XSane? This command adds an OCR sandwiched plane to a scanned file (the option behind -lang is for German):

-lang deu -grayfilter file.pdf

Compared with other solutions, the generated pdf file is relatively small. Therefore I would like to integrate pdfsandwich into the XSane workflow. It would be best, if this becomes possible for multipage scanned pdf files too. The language should not be fixed once for all. Perhaps this might be achieved by changing the letters for the

-lang

option stored in some file which is read after a pdf file is OCRed after the file is scanned. If the question for the language has to be risen for each page separately, then it should be possible just to press RETURN to stay with the most recent value for

-lang

.