the company that makes Collin Wright's wakeboards and skates do a wakeskate of their own and it has a similar idea. the edges are sidewall constructed like a snowboard and you can shape them or de-tune them. the guy told me that the shapeable bit goes back into the skate quite a way so you could technically grind up to 10mm of the edge and you would still not penetrate to the core.
that's not an integrity skate though so it's almost irrelavent!
Integrity skates are supposedly very strong though.
sorry that was mostly a useless post :roll:
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