Longevity of the edge is usually not the issue for us on all the skis we own. Our skis "flex out" before we run out of edges. That applies for all our skis. Whether they are FIS SL or wider carvers and all mountain skis. By "flexing out", I meant loss f torsional rigidity primary.
FWIW, A pair of FIS SL will hold up between 40 to 60 days of free skiing before flexing out. Much depends on the primary skier, snow condition and terrain.
FWIW, A pair of FIS SL will hold up between 40 to 60 days of free skiing before flexing out. Much depends on the primary skier, snow condition and terrain.