INFI, new or old is tough stuff and easy to grind and sharpen; there is nothing better with which to do heavy knife demolition. This concept of "smoothing out a roll" is kind of bogus IMO. Once a metal has bent past the point of rebound (like a rolled edge), it has moved from an elastic to a plastic deformation and the inter atomic bonds have been disrupted until the steel is annealed (reheated)(fyi that is why we heat or anneal reloading brass after several firings). The plastic deformation and broken inter atomic bonds can ironically create an increase in hardness (this is the concept behind the "4 inches of cold rolled steel" in the Game Of Thrones gates at the wall for my fellow nerds), but the increase in hardness comes at the expense of decrease ductility which means that its tolerance to being bent back into shape is decreased. A simple way to put this is ... once a steel edge has rolled, it is permanently altered in an undesirable way and the roll has to ground out or removed in order to replace a full strength edge. Try bending a coat hanger back and fourth a few times to the point of permanent deformation; you can see it stress, fracture and eventually it will break at the bend.
Now I the advantage of INFI, again IMO, is that the rolls that we tend to get with INFI are longer, but more shallow that a "V" shaped chips that less tough steels tend to get. A broad but shallow roll is definitely easier than a short deep chip to repair.
I'd be all over something like that!!!
