The answer seems to be no...
If it isn’t currently possible, could a minor change to the xnview.exe code, so that when it fails to find the path to Ghostscript where it currently looks [the registry?] it looks in an alternative, specified, location provide a simple solution?
[A folder ‘gs’ in the xnview folder, or beside the xnview folder, into which Ghostscript could be extracted, or certain files copied
