I'm by no means well versed in the subject - but I seem to recall a discussion around the time of Suleiman th Great concerning sharia - as I remember (and I could be wrong) sharia was deemed not appropriate for countries that were not ruled by "the faithful" and that sharia was reserved only for those countries where the "faithful" ruled, but that all in countries where sharia was in force the entire populace were bound by the rules of sharia.

It strikes me as worrying that any country not ruled by Islam would ever consider adding sharia to its legal system in any way. Frankly, religious law has no place in the governance of a secular society.