Internal engine coatings?

We are building a 572 right now and everything is being coated. The pistons are hard anodized coated on the ring lands and the tops. The skirts are coated but I can't remember what they are coated with. The wrist pins are also coated along with the main and rod bearings. IMHO coating is only worth the money if it's an all out motor build or if you are pushing the limits with pump gas or a power adder.