Climashield picks up everything...think Velcro with more room for stuff to get into. You would pick up every bit of fuzz, leaf, pine needle in the forest. The two layers of fabric over two would save you just about an ounce at that size but you would pick that much crap up in the bare climashield in two trips. We spend loads of time cleaning the climashield in the shop before we sew up quilts. Every bit of thread clippings within a hundred feet seems to find its way onto the climashield and that's in a "clean" environment.
My 2 cents after three years and pushing a couple thousand yards of climashield.