Mythical, the point is that if a Corsair sees you docking at an Outcast base and trading in Cardi, in RP he is going to put you on a blacklist and your smuggler will probably be shot the next time he sets foot in a Corsair base. It DOESN"T MATTER that it can't really happen to you in-game. The point of RP is to play a character, and in-universe, that character does not want to be cannibalized by Corsairs. So, if you as a player, are making your character do things that a character would not actually do in-universe, then that is ooRP.
You think, in-universe, a Corsair is going to care about your "business"? The only reason they don't put you on a KoS list assuming this situation, is because the players behind those characters want to RP with other people.
Simply put, even smugglers have to pick sides. Han Solo got in trouble with Jabba, Malcolm Reynolds got in trouble with Patience, and yet they are both pretty much the smuggler archetype that everyone tries to imitate.
In conclusion: power-smuggling because your rep sheet lets you do that is ooRP and LAME.