It falls uder the "skidded turns" category. As with all other skidded turns the snowplow, or the wedge-turn as it is usually called in the US, can be executed well or not so well. If its being performed well then the skis are merely "brushing" the snow in an even arc. If its performed not so well the tails will be "washing" out, think wind shield wiper turns, and the turns will be "overly" skidded and the turn arcs uneven and wobbly.
A typical misstake in wedging is when one ski is locked on its edge. This makes wedging impossible. Both skis need to be brushing over the snow. Wedging builds on pressure controll. Carving builds on tipping.