KwikSew are primarily meant for construction on an overlocker, so yes that would be why it has the 1/4in seam allowance. I am glad I saw this topic. My xmas gift for the ladies I work with, along with my sister, daughter and niece, will be a soft floaty cotton summer dressing gown, and I have a vintage KwikSew pattern for the job. I must remember to add seam allowance.