Are you a skier or what? If you understand how to turn a shaped ski properly, you can safely ignore the above. If you don't understand how to turn a shaped ski properly, sooner or later you will torch your ACL trying to steer anyway, so you might as well stick with what you want.
Geoffda--AspenCarve is not just a skier, but a former racer of some repute (that is an understatement). He was also a pioneer in the development of modern carving skis, having invented and marketed the original "S" ski--the first shaped ski I ever skied on, even before the Elan SCX. His advice is worth listening to!
And he is correct that narrow, high-performance skis with very deep sidecut can kick back like a chain saw, wrecking havoc to knees and more, especially in some conditions, if not skied with "respect." It is especially true of stiffer and shorter skis--modern race slalom skis in particular--and especially in soft and/or inconsistent snow conditions. I know of at least four good friends, top-notch, world class skiers all, who have had their legs shattered by such skis. I've come close enough to a similar catastrophe myself.
The problem is that these deep-sidecut skis are so reactive, and so sensitive to changes of pressure and edge angle, that they can snap back at you in an almost explosive, cascading chain reaction when things go even just a little wrong. The common scenario is to have them tipped up at a high angle, carving a great turn, and then to either get just a bit too far forward on them, or to have them sink into the snow, hit a patch of "slower" snow, or otherwise slow down a little--which throws your weight forward on them. Then that big tip hooks up aggressively, causing the turn radius to tighten dramatically, throwing you even more forward, and so on. At best, a spectacular "high-side" crash ensues. At worst, your leg breaks right at the boot top--which, again, I've seen too many times.
The irony is that these accidents only happen to very skilled skiers capable of creating high edge angles and high-G carved turns. And they tend to happen on easy runs. They are unlikely to happen to skiers who twist and skid, and keep their skis at low angles. The worst case I've witnessed was on a green run with perfect conditions--freshly groomed packed powder from a blizzard the day before, under a bluebird sky. Slalom race skis are made for ice. In the packed-but-soft conditions here, the ski suddenly broke through and sank deeper into the corduroy, slowing down and bending deeper, setting off the chain reaction I've described. Result: compound spiral boot-top tib-fib fracture.
Again, this is a syndrome that is not, unfortunately, uncommon. Contributing factors include short, high-performance modern slalom skis, and variable or unpredictable conditions. Imperfect technique makes it worse--especially the tendency to lever forward against the boot tongues, combined with upper body rotation into the turn (a very common error).
That said, most people here know that slalom skis are among my favorite things in the world! I ski them in a wide range of conditions. But I treat them with a great deal of respect in certain snow conditions. They are meant for ice, and they work best--and most predictably and safely--there. Beware.