I have both an unfinished Nording and the Harmony. The unfinished block has developed a nice patina.
If a shrinkwrap techology is used on the Harmony line that bodes well, as that is most often used on metal vehicle surfaces: so field tested for sun, heat & ultraviolet (from the outside anyway).
The bubbling I described in the earlier post w/link to an image is a bit disappointing, but the bubbles when hot and then cool are quite rubbery to the touch. I can push them down, but they don't go away. I don't think they will crack open... unless it gets a bubble so big it reaches an edge. So unlikely.
The rest of the surface has the feeling of having a shiny coating that will resist oils and friction... I think it will wear well.
These are my observations actually having one of these bad boys fired-up and in-hand. Looks great and overall I'm very pleased.
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Milan Tobaccanists in VA had one with the feathers, but sold it. I missed out. I asked them to find me another one and they did! Discounted price, free shipping, oh boy.
https://www.milantobacco.com/erik_nording_harmony_pipes.htm