Should I arrange visits behind my husband’s back?

My husband and I don’t agree on openness. We agreed on many things prior to our adopting our 2 kids, but now that our kids are home, my husband has admitted that he doesn’t believe in openness. We have one semi-open agreement with no visitation, and one open adoption with visitation for two years. And as time goes on, my heart becomes more and more open and I see no reason why we shouldn’t have closer relationships with our birthfamilies. I was thinking about talking to our birthparents about that and having a visit without telling my husband. How would birthparents feel about that?