i have to disagree with your husband, with the 7 iron on up, my hands are slightly in front, from the 6 iron on down, i set up square. my left hand is directly even with the golf ball. when your hands are in front, that delofts the club, ok on shorter irons, not always good on longer ones.
as long as you are hitting them good with your current set up, don't change a thing. tell your husband nicely, "you do your thing and i'll do mine, when i need help, i'll ask", he'll understand (hopefully).

i'll bet he doesn't want anyone telling him how to golf.
