Hi Alan, didn't know that you had swapped camps - the D300 just too tempting
I know that and I can honestly say that I have never used the histogram, hence my (hmm..). I don't use the LCD either much, having it switched off most of the time, but playing around with flash lighting I found it useful to use, especially for showing the spread of the light. I prefer to trust my metering most of the time and find I usually get it right.
As you say, it's only the cameras interpretation of the scene which is often different to mine. I've always liked to underexpose my images slightly, working towards the dark side. That's the mood that I like. I know, I know, with digital meter for the highlights blah, blah. Fine if you want an evenly exposed image (which sometimes is needed). But it would be a boring world if we all strived for that "smooth mountain in the middle" look!