Well, it doesn't seem logic to me that they can indeed go into house systems (Except if they just are flying by to reach another freeport).... They cut themselves from them, no?
Yet, I often see Juggernauts chilling in home systems, and even in Gallia (Btw, Just Exploring isn't an excuse. the GRN WILL go after you, even if you claim your ship is a colonial ship. It haz cap guns, and Gallia don't want this in their house.). Now, while I can understand why some Zoners are there, some of them just takes the ''Zoner Neutrality'' too far, no?