" I am a dirtbiker at heart and love the upward seated position of the stock 919 setup"
I too like the upright seating of the 919. I am surely in the minority here but like the Renthal High bars. I am 57 years old and can't handle the ergos of low bars. The only drawback I can see is that at speeds above 70mph or so (without a wind screen) you are begining to fight wind pressure where if you have a forward cant it is easier to balance against the wind. I don't spend much time above 70mph so it works for me and if I do bust off a high speed run I can still lean forward.
There are bold motorcyclists and old motorcyclists, but (OK) there are few old bold motorcyclists