I read this with some interest as I'm about to take off for Yellowstone on my 93 CB750 with ???? miles on it. As a streetbike I wish motor/brakes/suspension/frame were all better, but that riding position (with aftermarket motocross bars for a bit more front tire loading) just makes the miles disappear, and going fast on uncertain roads the joyous treat it should be.
Then I think about my racebike, a lightly modded SV650S I'm using to try out the AFM. The ergos that were ok in the twisties and a bit too much on the street become really obnoxiusly too little on the track. Following my instincts I put on aftermarket clipons that dropped the grips maybe 1 1/2" and moved them forward maybe 1", and rearsets that are up and back 1" in each dimension. Ahh, knee down nirvana. With the arch of my foot on the up peg, toe on the down peg, knee 1/2" off the pavement, chest lightly bumping the tank, and one bun on the seat the extra room kept my arms in a more natural position and made my weight fall mostly where the up knee hit the tank and the down peg.
So what's my point? Sportbike ergos are all about being tied to the bike, relaxed, and in control with a knee down. I say any bike with a more extreme riding position than the CBR600 f4i is just as much about posing as the harley "wind up my pants" stance. That is unless you wear out knee pucks going to work... and the only guy I ever met who did that rode... an R1150RT!