Any cap ship flying through a house system should generally not happen. This is of course without any good RP story to be there. I will occasionally fly my cruiser through some of the house systems, but the info card does state that the ship is built to be an "explorer". So I use the RP that it is a survey vessel, out to basically gather news from the house systems and right up reports on the findings (I need to start a page for that....). But most of the time I just stay stationed out in the omicron systems, cause that is where the zoners belong.