Morph is a very simple tool. It's gives freedom of modelling, from one hand, but becoming hard for quick modifications and gives very little for bill of quantities. The only parameters you can extract from the morph to quantify - volume and area of surface. If you save it as GDL, ArchiCAD generates the model, based on primitives - nodes, edges and triangles, that connects nodes. In real projects, where quantification is important, I'm trying to avoid using morph as much as I can. Simple example - the shape as a slab is much easier to modify (including changing surface material) than if it modelled as a morph. Morph also will not give you plan area of the slab, or thickness. It's better to use it for furniture, decoration, sanitary ware and similar.
