Sheriff Star hubs are completely rideable. Campy did not create them as display items.

I guess all my high flange hubs are failed and I've just not noticed yet. They all operate at 120-130kgpf drive side rear.

No idea at all how much spoke tension would come with tighten until nipple begins to strip. It would be highly variable depending on nipple, lubrication, wrench. I've rebuilt wheels built by others with well over 200kgpf and all the nipples were intact. So nipple strip-out would come at much higher tension. Building at those tensions would not be a good idea for any hub, even if they would take it.