So far the edge is fine, but it hasn’t really been tested. It’s generally just used for opening letters and boxes. I think it will be fine. I used a low speed belt sander with a 50 grit belt to remove most of the metal. I kept a cup of ice water near by and dunked it and held it until ice cold about every 5 – 10 seconds and the blade never felt more than slightly warm to the touch. I took the last 1/32″ or so off with conventional and diamond stones by hand.
Edit: Also, I used a post-it and a sharpie layout a straight edge so I could see my progress. It’s still not dead flat on the top, but I accomplished what I wanted. It can now stab into stuff and I personally prefer the look.