I haven't. I wash everything before adding it to my stash. My fabrics come from a variety of sources and are made by many different manufacturers. Some are older (Mom's stash) and some are newer. I need to know I can pull any thing from my stash and not be concerned about bleeding issues.
The wrinkly look can be achieved with the batting. Most of the time I use Hobbs Heirloom batting, 80% cotton, 20% polyester. For a wrinkly look, don't pre-wash the batting. When the finished quilt is laundered, the cotton will shrink a bit and give that antique look. For a smooth look, pre-treat the batting. The instructions are on the label.