Yes I have used both polyester and rayon and sometimes even added metalic for effect. I prefer rayon for its shine. - Aileen
I haven't but I don't see why you couldn't. By the other Cuties answers seems to work great.
Good question and interesting to see what the replies were.
YES I even use cotton with both it just depends on how I want my picture to look and the color I have on hand !!
yes, I have used rayon, polyester and even cotton thread in the same design. Oh yeah metallics espeically for Christmas designs.
Yes I have done so just because of the colour.
I do however prefer polyester,it will withstand washing beter and especially for table linen.But then it is always only thread for embroidery. Normal machine sewing thread might be too thick.Although I have seen serelon used for fsl,both in the needle and bobbin.
I have on purpose, just so that some details I want to stand out shine more with one thread, and others I want to be more background I use a more matte looking thread. They turned out great!