I'm surprised it took to page 4 for people to start talking about how it's putting you at a disadvantage for the opening round, being that you're actionless, stressed, and presumably outnumbered. Especially compared to the standard scenario of you go straight instead of K, you have an action and no stress, shots are exchanged as they previously were. But now you fly past with a 4 straight or something, but since you're blocking their K turn, they can't get a shot on you. Now you have a free modified shot on them out of the rear arc.
The only time I could see liking the K turn at the start of combat would be if you have bombs you want to drop. But I'd still be nervous about dropping a bomb at the cost of exposing myself to the enemy.
This is my thought exactly and is how im going to use the rear arc on S&V Kath.