Our AN intact male, and pygmy intact have runs alongside each other.The pygmy has enormous horns, but the AN towers over him. The AN jumps the stock netting fence with ease, and has a run round with the other billy. Yes, the horned one does run at him,but when the big one has had enough, he sails back over the fence.
Also have pygmys alongside the bigger de horned goats, but once established as a herd, they do tend to get on. To be honest, its the worry of them getting horns stuck in the fence, rails, etc. thats more of a worry to me than the horned and hornless clashing.