It's not that I'm scared, it's that I'm not interested in SGs.
BUT... that said, because I want to play, I'm hoping to pick up a shotty for 3G sometime this year, and I'll keep that system in mind. Looks promising over the load 4 methods, if nothing else for reducing the "disaster factor."
Trust me, once you get into 3 gun you will like shotguns and shot gunning. They are very versatile and the different shot combinations are fun to Learn To use effectively.