Not us, not me, I wasn't buying, even though I have bought at least one new pair of skis for every one of my years on skis. I told myself the ski industry wasn't even being honest with me. Parabolic means symmetrical. The front and back of the skis would be identical. None of them are, only one manufacturer even came close to this.
All skis have a shape.
They are all narrower in the middle than at the ends. Conventional skis are narrower at the ends than shaped skis and are considered straight skis. A few years ago I demoed shaped skis at Whiteface. I tried an Olin Radius at 200 centimeters and a brand I will leave Nameless at 198 centimeters. I liked the Olins and disliked the Nameless.