I'm using white Invisafil for hand applique, right now for reverse applique with white over red. It works great. It tends to be a tad wiry, and you need to treat it a bit more delicately because it's such a fine thread. It's also lot harder to see when you're working on it (!). But because it's so delicate, it's very forgiving for those of us with modest skills -- it's that much harder to spot misplaced stitches. I like it and will keep on using it.