Tell the truth, Wardy, we all know you position your levers so that they can hold a cheeseburger and fries while waiting at the starting line! :p
I keep mine angled down about 25 degrees. It seems if I put them any lower, then I lose any strength in my wrist because it is bent too much. Ike Dejagger told me to position them so that my wrist would be straight (and strong) during hard braking while still being able to use the clutch and brake. It turned out to be higher than I used to run them (I used to go about 45 degrees down).
The only time that I actually use the "screwdriver / doorknob" grip is in turns to keep from dropping my elbow too much. (Of course, that is absolutely no inidication of how it should be done!!)