In the '70's, I was part of a congregation that had some sisters married to unbelieving mates.
One of the husbands was a sociopath, and he and his JW wife had been divorced and remarried about 5-6 times (no lie!). The kids were rebellious and behaved badly. I don't know if they're still dubs or not.
Another husband was a sweetheart who gave his family a good life. Eventually, he became a publisher. Not long after that, the whole family left the borg. The mom got a secretarial job at the university. The daughter became a French teacher. The son became a reporter, and has won a lot of awards. The daughter told me that she got to go to cousins' birthday parties as a child. The exposure to the freedom of being "worldly" was very beneficial in this case.