New Tool from Bad Cam

Cool. Do most machine shops perform this when they install new brngs? I would be worried that any removed material would end up in the oiling holes.
They should test fit a cam. If they assemble the short block they would do it when they assemble. You can scrape the bearings with a scraper or hone them. Easier with a cam that has been modded like George did above. It just knocks the high spots off. Blow the chips out with a blow gun and rock on.