Anyone Using Deadly Viper?

Thanks Eric for reminding me about this gang. I’m thinking of taking some of our staff through these books. I’m just wondering if anyone out there has (a) read the book, and or (b) taken other staff members through them?
PS – here are a couple reviews of Deadly Viper I found on my own:

We’ve been going through it with a couple of us Pastor’s at church. we’ve really enjoyed it. It seems to encourage discussion and leave room for setting goals and such. I’d recommend it.
I have read it and loved it. We are going to be doing it in a few weeks with the mens group and also with our youth group
We just starting going through Deadly Viper with our team. Our first discussion is this coming Monday. I can’t wait to see what God does through this book!