Tim, after seeing your posts on the M9 section in addition to the above, here's a couple of things you might consider :
Graham's right when he says the D700+MB-D10 grip is heavier than D3 especially when the batteries are fully implemented. OTOH you then have a lot of options, D700 alone
or with grip without extra batteries (use this one quite often for the vertical shutter and AE/L button)
or the whole configuration (only needed for extra continuous speed, though the D700 alone works pretty fast for most applications).
Or, you may indeed choose to go with the D3 effective solution with the extra couple features -again, dual card is a sensible plus.
Regarding primes -i only shoot primes- it really depends on how you value/need the AF. Being a Leica & Mamiya 7 user it might not be a mandatory requirement. Then you might consider the lens offer from both Voigtlander and Zeiss in F mount.
A D700(or D3) + either Voigtlander 58/1.4 or 40/2 is a terrific, relatively light weighted and not overly expensive walk-around solution. Zeiss 50/1.4mm ZF is great, too.
Then (my personal favorite kit) if you can spare the extra 1.4 speed, both the 35mm/2 and 50mm/2 are fantastic lenses, extremely easy to configure and use on D700/D3.
Metering works smoothly, and thanks to the quite versatile and user-friendly body customization possibilities you pretty much only miss the auto-focus mode.
If AF is an issue, then right, Nikon has to -at last!- come up with a 35mm equivalent to their pretty good 50/1.4G.
Overall, it's nice to have options, isn't it ?