Ah, as I read down, I saw that you were thinking of machine quilting.....and here I was going to tell you I recently finished handquilting a candlewicked quilt with #10 wt. crochet thread. :-)
It was amazing if I do say so myself, but, though I've asked repeatedly for copies of the pictures taken of it, I have yet to receive them to share here.
I LOVE quilting with crochet thread, the look is very nice!
Jan in VA