Hips first in squats and deadlifts is generally accepted as the way to go, and I agree. You’ll still get strength carryover into skiing, even though they are clearly two completely different moves. If you want to get more specific for alpine skiing, I’d recommend grabbing a TRX suspension trainer and mimic the lateral moves you do in skiing while holding the straps. I did a similar move for telemark turns and found it was a great preseason exercise.

Ken