O Group

While the rules have been out for quite a while, I just purchased them. I am interested in seeing how they work. I am wondering how they would work in concert with IABSM and Chain of Command. It could be interesting to model a battle at three levels.

I am interested in others opinions of these rules. Also how do General D' Armee and Picket's Charge work? I have thought about picking those up as well.