I have experience with both the Zipp SSR bars and the 3T Rotundos. Currently I'm on the Rotundos, with these bars not only is the lever position important, but the angle of the bars is important as well. the more you tilt the bars up, the less reach you have to the levers, but the more reach you have to the drops/hooks, which makes shifting from the drops more difficult (especially with Campy). I tend to run mine with a very slight tilt, and having the tops ramp down to the hoods so that the top of the hoods are almost flat. This makes shifting from the drops much easier.
With the Zipps, I found that they were very angle sensitive as well, but not in the same way as the Rotundos. Since they have a slight "kink" in their bend, angling them will really change the way they feel. If you are looking for shorter reach by using handlebars and not stem, these would fit the bill IMO.
Notice how on the Zipps the levers are mounted higher because the ramps on the Zipps are essentially flat and drop off immediately, whereas on the Rotundos the levers are mounted lower as the ramps extended downward with the increased reach. You definitely won't be able to get that short of reach with the Rotundos, even with the levers mounted higher. If you're looking for shorter reach, I would advise either avoiding traditionally shaped bars or going to a shorter stem.