Hi,
Imaging Resource published samples from both the D800 and the D800E. One of the test images I checked earlier with the Pentax 645D had a lot of quite unexpected Moiré. I downloaded and compared the three corresponding images.
The Pentax shows a lot of moiré on Samuel Smith label, the D800 none and the Nikon D800E some.
I have two screen dumps from Lightroom, first is with "landscape" sharpening on all. On the second one I applied a deconvolution sharpening I would guess is adequate for AA-filtered images.
Of course it can be argued that all images could be sharpened in the same way, but AA-filtered images need more sharpening, it is part of the equation.
To put things in perspective, very few landscape photographers ever complained about moiré, and if a photographer doesn't have problems with a large pixel pitch MFD (like old 25 MP backs) it is highly unlikely that he/she would run into problems with the D800E.
On the other hand, the image is a fine illustration that moiré can show up in unexpected places.
Image order: Pentax 645D, D800 and D800E, left to right.
Best regards
Erik