This is not the bar with which to do the latter. It’s very stiff. Probably will save some weight (~50g), but the bar does not really soak up the road vibration like some other carbon models do. The weight saved when paired with a CSX aerobar might be almost worthwhile if you weren’t also losing time to increased frontal area (on the base bar). However, as I mentioned in your Classifieds section, the CSX is too low of a stack height for your setup - you would end up with every spacer you were running initially.
Chris