I can't answer the original question or even the follow-up, but...
I put the medium pro-taper atv bars on my wee. I left them the full width, which was wider than the stock bars. This meant that the cables had to reach farther and I could not pair the bars with my risers. I really liked the geometry with the wider and less-angled atv bars.
My only issue with the installation was that I didn't transfer/drill the locator holes very well, so the angle of my control housings (starter button, etc) were not ideal. To be specific, the first time I pulled in the clutch, it touched the yellow momentary high-beam switch. I had to rotate clutch lever assembly forward slightly. Nothing major, but worth mentioning.
I didn't find a bar-end weight that fit the smaller inner diameter of the Pro-taper and the resulting vibration made my fingers itch. It bothered me enough that I eventually went back to the stock bar/riser combo (with weights). When I find a working solution to the vibration issue, I'll probably go back to the Pro-taper again.
I don't take this bike off-road, so I'm going to ditch the deathwings and maybe try some Metzler Roadtec Z6's. That is unless I hear horror stories beforehand. I think that some of my freeway vibration is tread related. My commute is 70 miles/day.