Here is one example where I mounted blade ~3mm from the tip.
https://youtu.be/6Ld-ej-OtEEMain reason in this specific case was that the skater changed boot from Edea Ice Fly to Graf Edmonton special. I didn't check if the new and old boot sizes were same, but blade was a bit too short for these Graft boots. It´s common that if you change from the Edea to some other brand, your blade might be too short or at least shorter to sole than most of us has been used to see.
Skater changed boots because Edea didn´t fit her foots. She skated one month with Ice Fly´s, but they were causing too much pain. She has used previously other Edea models, but this Ice Fly wasn´t good for her. They went back to figure skate shop where they did buy Edeas and end up to Graf boots. Strange is that this professional figure skate shop didn't ensure that their existing blade has correct length for the new boots. Pro service...or maybe not.