In a home defense situation I would not worry about my hearing. If you have some electronic muffs and time then that might be a good idea to use. Otherwise I want to hear as well as possible.
I understand that you are afraid of hearing damage because I've fired many rounds of .22 when I was young without protection. These days I have significant damage and do not wish to have the least bit more damage but my wife and daughter are more important than my hearing. Use the gun that you shoot the best.