The attachment point is the IC DVW as you know and higher is always a higher AS value. Ladder bars are always so short that you always have some ridiculous amount of AS value and are trying to take some of that initial hit out of it and control it with slicks. That is why with slicks its usually better to have the bars running downhill slightly IMO but I realize all cars are different. Shocks control it all too and years ago we never had valving to control the hit properly so we always ran them downhill. Radials and no prep are a different animal.