I too wash everything that comes in to my house. Some of it comes from LQS, some of it is from Handcock's or Wall-mart, & finally some is from estate, & garage sales. With all these different fabrics I need to know that they won't shrink differently or bleed.
I do like the crinkled look. I use wool batting. It shrinks wonderfully, is warm in the winter, cool in the summer, & the quilting needles go through it like butter.
As soon as I finish putting the binding on I wash on delicate & dry in the dryer. I then get the look I want & know if it needs any thing fixed. I then instruct the recipients to only line dry it (so it won't shrink any more!)