It will wear your stone more than its worth. Plus don't assume the chefs inside 'hipster' restaurants are clueless about the tools they use. Though most won't own a decent knife or care for stones
No, I was thinking that hipster restaurants may care more about their knives and would like them locally sharpened by hand, by a fixed wheel riding, be-mohawked, stay at home dad, artisanal bad ass.
I'd certainly like to have a go, but expect I might be into grind wheel territory with a complete reprofile. Or serious time on the 240 stone.
Where are you based?