I have used the Hoodman for two years and I just ordered another one because I just bought another D300. I have very poor eyesight and double vision to boot so I definitely need help when it comes to shooting photo's.
I have used that combination, and recommend it. The only downside I have experienced is that I tend to push against the eyecup too hard, resulting in my wire frame glasses getting pushed into my face and subsequent smudging when I rearrange them after the shot. It's only a minor annoyance.