Thanks for the post, and glad you like the switch to Nikon (D800E). Like you I almost never use tripod, MUP, etc; just too much trouble. If I have to do that in order to get sharp photos, I'll probably leave the D800 at home most of the time. So, I've been using the D800 exactly as I have the D700 -- and the results are fine by me. Simple rules such as keeping shutter speed sufficiently high, or resting the camera on some convenient support, is about all it takes.
I just want to point out that although the silent shutter mode is not very good, the D800 is miles improved from the old D700. The shutter noise on the D700 is really, really loud. So, I am thankful that Nikon managed to significantly reduce the mirror/shutter noise and vibration in the D800 (although it might not meet some expectations).