Anytime

If I calculated roll center height that would be complex to me at least but the importance of static roll center height is low in the grand scheme of things.
The roll center moves around when the car rolls, on some setups less than others, therefore finding a clear starting base is more important than having a set number and trying to make it work with the driving style and car geometry.
One thing I have to share is suspension - jacking forces. They are very important and the effects are tied with roll centers.