I am of Finnish and Sami descent, family has been in Minnesota, USA for 100+ years.
First time I read about a Sami bow, The book mentioned it was of pine and birch and I thought they were mistaken. After reading some of Ragnar Insulanders information, I became familiar with compression wood, and couldn't believe the difference. On the spruce I am familiar with, the regular wood is fairly soft, and the compression wood ilooks and feels like ivory, being totally different then normal wood.
Growing up in a farming and logging family, you would have though I would know about compression wood. The only thing I remember is my father telling me not to mill any leaning trees into lumber, as they will warp and twist terribly and move around with the moisture variations.