I personally think scrim is to be avoided for hand quilting because it makes the needle harder to punch through. It is great, however, for machine quilting.
There is a cotton batting that is needlepunched (creates a lot of stability and evenness) but not through a scrim. It is the Quilter's Dream line, I think.
Warm'n'Natural is an example of a cotton batting that is needlepunched through scrim.
I think only cotton battings are ever needle-punched.