Who's using a D4 for amateur photography?

Mine will arrive on Monday so will let you know my impressions then. Have been shooting with a D700 which I really enjoy it but was looking for something faster and a bit better focus. I shoot mostly portrait, landscape, street and an occasional RC jet event. Probably overkill for what I need and still debating if the D700 will be in the bag. I just felt like why not if you can, life's short.