Use whatever works so long as it doesn't contain nicotine (which is what you're addicted to). I think fake was great for me because it made me realize that dipping is 100% an addiction to nicotine, not the taste of dip, not the burn, not the spitting and not the having something in your mouth. The fake just sits there and will never satisfy you and make you understand that you just want nicotine.
Do what works. Post roll, keep your word and come here and read everything on the site. It'll be funny, educational and most importantly, keep your mind off the brutal withdrawals to come. Fight through. It's so worth it on the ther side for you. Your family will benefit, but this has to be totally for you.