The photo I saw of the Lankku doesn't show the camera dutton due to the angle of the photo. But you don't have to worry as Lankku is confirmed as having a 2 level camera button. The reason I didn't mention it for that drawing was because it doesn't seem to protrude out like the other buttons. I believe it is more like flat to the body like the N8/E7.

No It is more like N900. 2-button length Volume rocker, another button just below it in the middle of the length of the phone. (possibly unlock/power button) I would not expect the camera button to be located in the middle....