I'm a CW skater, and my right blade always dull faster of the outside edge because that's the edge and foot that I always stop with. Luckily, it's not my landing edge. I also get a really dull spot on my right inside edge near the spin rocker because of practicing so many double sals. Same with my right outside near the spin rocker because of all the axel entrances. My left blade survives unscathed though. I got around 80ish hours between sharpenings, 13-15 hours a week, 6 weeks, so, it's I consider that a pretty good edge life.