I got one of those silky book covers from wal-mart(meant for text books). Cost me $.79 and I had mamadukes sew them up
http://www.rcpics.net/media/082703_01.jpg
http://www.rcpics.net/media/082703_02.jpg
http://www.rcpics.net/media/008_body_off.jpg
Give it a shot. If you don't like them then oh well you wasted $1 and some time.
I don't have that truck anymore, and I have a Hyper 8 now(I've seen the light) but I personally didn't have any real benefits from them... fine dust still gets through, but it did keep thick mud and whatnot off. I use the rubber ofna booties now.