polymorphself - that protruding spoke should not be like that. It would most certainly eventually puncture the tube internally even with Velox rim tape. The wheelbuilder miscalculated the spoke length. I would most definitely take it back right away to have it remedied. If it were a double wall rim with a ferule then the protruding spoke might not cause a puncture. But from the photo it appears that your wheel was built with a single wall rim so any amount of the spoke tip that protrudes from the end of the nipple creates a sharp point that will lead to a puncture.