Mick,
So when is your book coming out?
http://www.rottweiler.net/rottie/smile.gif Very interesting post, seems I've been doing my dog a disservice. I've always called her a "woos" (slang for a bit of a baby). Reading your post, you've described her to a "T" in the mid-strength nerve range of behavior.
Sometimes people read so much about what the temperament of a Rottie is supposed to be like that that they feel their dog is less a Rottie if it doesn't fall into the strong-nerve category. I think you've pointed out quite well that these dogs (few and far between as they are) are not for the average pet owner.
I have always said, (and taken some heat for it here
http://www.rottweiler.net/rottie/smile.gif), that if you've had experience with other large breeds as family pets, that you shouldn't have any trouble with a well-bred Rottie with a stable temperament. You have just clarified about temperament what I was assuming in my statement, but never articulated.