As a current Seascam owner, two D700 housings, I'd have to agree with Loftus. There is no really good reason to buy a Seascam housing for the Nikon D7000 (or any other Nikon in my opinion) unless you have a considerable number of Seascam ports and accessories from a previous housing, which I did from 10 years with housings for the F5. Harald just doesn't seem to "get" Nikon and clearly isn't getting or accepting quality user advice on Nikon as he seems to do on Canon from pros like Kurt Amsler and dealers like Stephen Frink and Paul Kay. His housings for the Nikon D700 lacked any control what-so-ever for the ambient light metering pattern, which can be a very useful option, and which is why Nikon has this choice on virtually all of their cameras.
Many Seascam controls have strong springs that return the control to a neutral position and don't allow you to leave the control in a position that keeps the camera button depressed, which can make varying things like compensation and flash compensation MUCH EASIER on shot sequences where you want to bracket the exposures. I removed mpst of those springs within a couple days of receiving my housings.
Seascam seems to be far more concerned with appearance, especially Seascam Silver, than about practical functionality of their housings. I see the lack of controls and buttons on the Preclude housing as just another indication that Seascam is slipping into terminal control deficiency. I also feel that the bright silver housing color SOMETIMES makes getting close to visually acute critters more difficult and ALMOST ALWAYS makes seeing the camera's LCD screen more difficult than a dark housing color would.
I've spent quite a lot of time and money on control modifications to my Seascam D700 housings and feel that they are now the best D700 housings anywhere. The housings NOW allow much more convenient accessibility to the Nikon D700's capabilities, which is what I feel is the most important thing in any housing. Except perhaps keeping the camera inside dry. I now have a real port lock. I can now change the D700's camera battery almost as easily as I remove the CF card, and without having to totally remove it from the housing as I did when I first got the housing.
It is unlikely that I will be willing to go through all that effort again and will probably change housing brands if I feel the need to change to another Nikon camera and can't modify the housings I have to accept that new camera.
Fred