These scissors are great for crafts that have any sort of adhesive or tape on them. We use these for decoupage and scrap-booking, and the non-stick surface really works. I would definitely call these medium-duty scissors, but they're perfect for what they are intended to cut.
Although it's not stated, these scissors seem to work as well left-handed as right-handed. My son was cutting poster board for a school project and I saw that he was using this pair - it's just that he is left-handed. When I asked, he said that they work better than the LH ones we bought for him!