Overall I like the article. I see that reasoning, it is sensible... yes, they would be pirates, or at least... playing with fire. There are instances where they would trade, or even use orks to their advantage, naturally not in an exploration or missionary scenario. Perhaps to stage an attack on an imperial world and have a patsy, or other similar subplot.
I look forward to when it's completed, Rogue Traders are perhaps my favorite fluff in the 40k universe, and the old 'Fabric of the Imperium' article was somewhat vague and confusing. Very unbalanced as well, as the RT cruiser almost had the stats of a Tyrant, but was way worse, and the recommisioned vessel far outshined anything else. Although it was nice to take unlimited 15 point escorts, and I had been tempted to try mixing them with Orks for the cheese tactic of better leadership because of it.
It's good that you've fixed that. I'm surprised you're wandering around here, I remember a while back only seeing Jervis. Battlefleet gothic is full of holes, and it's somewhat difficult to decipher what's official and not, what is even worth thinking about, and etc.
I'm enjoying the 2010 FAQ, but there are some things that I disagree with (such as premeasuring weapons ranges.... movement I can accept, I understand it makes the game more fair, but not knowing things for certain added a little guesswork and fun)