It will be a rat race for sure. Some folks may get lucky and sell at the current IOU price before it has an initial launch dump. Then we will see a correction to the first floor and then it's anyone's guess at that point. There are some of the IOU buyers that are going to want to at least make their money back so they may support or raise the price. Depends on the players in the beginning and how fat they want their stack to be. I think it will open just above $2 and play there for a bit then go up to about the current IOU price. Then a massive dump with a quick recovery. Then it will hit is actual value after people execute their exit plans. This IOU stuff gives this a whole new dynamic to an actual exchange release.
If there is another delay it will leave a sour taste for some people and people may want to panic exit.
It's unrealistic to expect an ETH pump out of the gate. I hold lisk so it would be awesome to see an ETH like pump but not likely. Gotta be realistic and execute your exit plans if you have them.