Well Nacchi does has the body for gravure. And then some ... *drool* Not sure if she has the attitude though. I've never seen her do sexy on purpose and look like she was enjoying herself. TV might be a better choice for her.
Satoda posed for a gravure site and she isn't a gravure idol (yet lol). Also, UTB and BLT publish all kind of idols' pictures and they're classified as gravure magazines.