Once Saved always saved/bible only

I am really worried about a Baptist friend of mine. I am Catholic and don't really bother people about what ever religion they are in. In fact my husbands family is Baptist and we were married in a Baptist church. I am very aware of the difference in the two religion but also know that there are allot of God loving Christians in both. (every religion has a bad apple).
anyways, a friend of my husband has just discover the lord in the Baptist Church. He is head over heals in love with the lord and the church. Currently he is teaching a class at church to the children and has met a girl at church and is considering marriage. Anyways the other night he (the friend) was telling my husband that if he were to commit suicide now that he is baptized that he would go to heaven. My husband (who is also Baptist) told him that is not true and he needs to talk to his pastor about that. He insisted that once you are saved you can do anything and go to heaven because you are coated in the Blood of Christ.
Now just as a person I think that suicide is wrong no matter what religion you are in! I truly believe along with my husband that the only person that can take a life is one who gave it to you. Which is GOD! Is my husband misguided or what? I don't know what to do. I do admire the fact that the said he is going to quit cold turkey drugs, alcohol and smoking! I admire people who go out of there way for our Lord. Anyways let me know.