I'd happily — no, ecstatically — carry that thing around all day. Possibly accompanied by maniacal laughter.
It does appear larger than I would have thought. My D7000 only looks slightly smaller to me than my D300, which is only slightly smaller than a D700, which is about the same size as a D800— if you follow me. But in the photo it appears to dwarf the D7000. I guess all those small differences add up.
SSB