Yeah, that's definitely the Gunner Station Vader. I guess my seeing the cloth waist cape was merely a trick of light in the first picture, since it now looks like it's just the neck cape being held tight due to the twist-tie around Vader's waist.
That being said, this is really one of the best Vaders they could have included in the set. The cape is removable (at least on the GS one) so I don't think it would be as prone to ripping as the CTC version, and the figure was made to sit in a TIE cockpit anyway, so I think they went the right route with this one.
I'm curious to see what they end up doing with the packin figures for the ESB Slave I and the new Y-Wing. Is there going to be a Fett included (I haven't seen pictures; and if so which one?), and who is included with the Y-Wing? A Gold Leader from the Saga line?