Has anybody bought that book by Malhavoc press/Skip Williams called "Cry Havoc", the d20 mass combat system.

I have it and think it would be fun to use in my campaign for the domain battles. I've done some work on trying to make units that use those rules blend with the BRCS ones enough that it will be fair. Have any of you that have read this book tried that? Any suggestions? Rule alterations if I did?

Also for those of you with extensive experience with the BRCS playtest/sanctioned chapters combat system, I have some questions on its balance so I can maintain that in my system adaptation:

For instance, would a unit of Knights, muster of 6GB, would straight-up on average eat up 2 units of infantry, muster of 2GB, be even with 3 units, and probably fall to 4?

Would that same unit of Knights get schooled by 3 units (6gb total) of archers because their +2 bonus against cavalry is enough to tip the balance?

Any ideas, thoughts, considerations would be appreciated.