I am a clip as you go gal. I hate that task of having a million (I know I am exaggerating) threads for me to try to find and clip off as I am about to quilt it. All threads do show more if the fabrics are light and thin. Even though the threads wouldn't show up that much on a batik quilt, I still trim them off. I hate them hanging everywhere and potentially getting caught up in new seams that I am making.