I would be satisfied with a lot less adjustability, as long as I could swing the grips outward just a little to reduce the twisting strain on my wrists that I believe to be the main cause of pain/numbness.
This.
I am really agonising over getting something. I was noticing the angle of my arm to my hand the other day while riding, and my arm defeinitly pokes out at the elbow like a chicken wing (to overexagerate). I went down and sat on the bike bike tonight, assumed the position as it were, and could really see how this outward twist in my arm extends down to put weight on the outer edge of my palm. I also noticed that if I pretended I was braking hard into a corner (work with me here, guys), the angle of my arm twisting out was even more pronounced and I could feel this leverage effect putting even more weight on the outer edge of my palm - this I am going to assume is where my nerve damage came from that is still not 100% healed. When I straight armed myself, so there was a straight line down my arm over my hand, I could feel my weight evenly distrubted over my palm and even pretending to brake hard while my arm still chicken wings slightly, it is no where near as pronounced and the weight stays mostly across my palm.
I am personally convinced unless I do something like these risers that will twist the grip outwards I will have to sell the bike as it would seem a day of hard riding in the twisties leaves me a cripple (or at least having the pleasure of a stranger doing it (if you have to ask, you don't want to know)).
GAH! I really wanted some exhausts, but these "practical" mods keep getting in the way. I'll have to ask if they post to Australia.