I think my running shorts have them, I didn't order them to be scrunch specifically but they appear to be.
It's fine, nobody really takes any notice when I'm running which is why I wear short shorts even though I have chunky legs. All my pairs also ride up so that's interesting but nothing I can do about that if I don't want to get too hot in leggings.
I do get compliments on my bum because it's naturally curvy which is what most people seem to aspire to at the minute. It's not the best but it's not the worst and if people don't like it then they can just look away.
I don't wear my shorts in the gym though because I'm too self conscious about the chunky legs and the cellulite and I'm a lot more visible when I'm weightlifting or on a bit of cardio equipment. Same reason for not wearing them day to day but I probably would if I had nicer legs!