yeah I agree with what others below are saying.
I switched to just stuffing my quilt into the bottom of the pack. I also use a heavy duty trash bag inside my pack, and don't carry a pack cover (well, I did in Iceland, I caved in, worrying about hiking in all freezing rains, which fortunately didn't happen, much)
I love stuffing the quilt, no wasted space.
It seems to me that if my bag(quilt) was inside out, it would be more susceptible to getting dirty on the inside, so I'm not understanding that "advice".
My advice is to try stuffing it, make sure you're keeping it dry, it's your last line of defense against hypothermia.