As far as I know, the JW's really want marriages to work. I was a JW who married a non-believer when I was in the df'd stage (at 20) and then I began trying to get back into the "group" soon after. Of course I wanted my husband at the time to study and attend meetings, even now and then; but he only showed interest for a brief time around '75 when they were trying to convince everyone that the end of the world was at hand. When he saw that didn't occur, he stopped studying.
It's always better if a couple has similar standards of living and somewhat similar spiritual views. The JW's are just too far out there for most divided marriages to work. I would have to say that no brother/elder ever gave me the advice to leave my husband. They in fact cautioned me not to divorce him unless I could prove by "visual sight", that he was commiting adultery. I stayed in a very abusive situation for way too long because of that directive. Divorce was just an absolute "no-no" unless certain situtions were met. They always felt that the "other" mate could be "won over" by the faithful JW in time. Sometimes that did work, but most of the time, the wife just stuck it out in a horrible situation with no way out.
I have no clue how things have changed since I left in '83. I know of many marriages from my old congregation that did not survive--many of those where both started out as JW's together ended in divorce.
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