Just to clarify, do you use in camera sharpening if shooting in RAW? If so surely no picture controls are applied to a Raw file, or that's my understanding, they are only burned into a jpeg file. Or, do you mean that you set it, even when using a Raw setting, so the rear display jpeg thumbnail shows a sharpened image.
Thom Hogan's D800 book recommends setting a higher sharpening setting for rear display check purposes.
I would be grateful if my understanding of picture controls such as sharpening having no effect in a Raw files is correct or not please.