No. It doesn't actually exist. There's one Sherlock skating AU from what I can tell and it's not really what I want. I really do want a Tony Stark skating AU; it would just be so hilarious.

There's a bunch of Thor/Loki skating AUs. No surprise, really. They're all The Cutting Edge--Thor is a hockey player. Of course he is.

The most hilariously titled one is a skating one for Game of Thrones called, "A Song of Mostly Just Ice."