If my husband and I really wanted to conceive, we could attempt that right away. There is no waiting period. Sticking a plastic and metal object in my uterus. No thank you. Spermicidal solutions sound irritating not to mention messy and ineffective at preventing pregnancy.
Spermicides used alone are the least effective birth control method.
Barrier methods like the condom and the diaphragm have their own problems. Sure he could as long as neither sexual partner has an allergy to latex. One thing to mention about the barrier methods is the irony in the method and the act of sexual intercourse. If I'm going to make love to my husband, it seems strange to tell him I need to put my barrier in place first. Well, NFP still seems to be the best plan for preventing pregnancy when considering complications.