Hello Hvid,
Yes we have, a lot. We use them to extract finishes. For most ceilings and floors it is direct.
The main problem with that methodology is that these zones do not take into VICO the area of windows and doors associated. Therefore, you have to do that operation in ArchiCAD, find out what the relationship is between net area and gross area, and use that as a percentage through formulas.
One of the best things about using zones for finishes is that you can do Control by compartment (provided your Zone name and ID are the same).