I used this as a witnessing training in my church. My members enjoyed it and have been using it. It is non threatening and easy to use. It doesn't even have to require a lot of memorization. I liked that it was not another preacher but that I could share that it was just another Christian like them witnessing to others.
I think this is a great way to share our faith. It is definitely the simplest way to share that I've ever read. And I've read a few. Plus, the reassurances that are given that sharing is the victory, not the decision, are terrific!