No, I work as a Developer part time and as a self employer the rest of the day (Quantity surveyor, teaching SketchUp, etc.). But I try to deal with Ifc files everyday.
In Spain people exchange models in Ifc format, and I use a 5D software to obtain automatically the budget with and Ifc file from Sketchup.
Related to bounding box I change axes to obtain the real quantities but I don’t modify the model, I only attach a Parameter set with quantities.