Beyond Yoga Spacedye - All day comfort?

For those that love beyond yoga, I'm wondering how comfortable they should feel when they fit perfectly - i.e. should they feel comfortable to lounge in all day or should they be more supportive for workouts?

I have a 27" waist and ordered a size small in the spacedye shorts and crop tank. They don't feel too restrictive but they definitely leave a little mark on my waist so I don't see myself wearing them all day. Would you recommend sizing up, or is it important for them to hug your body so they don't slide around during workouts? I don't have this issue with size 6 in lululemon so I'm wondering it's just a sizing issue or if it's how they're designed. Thank you!!!