i noticed a difference with it. since i was too cheap to buy papers, and was sick of making nasty fiol bowls, i started repacking my cigarettes with weed.
whether or not the difference was mental, i always poked a hole in the filter. before i put the weed in, i'd stick a paper clip in the filter and wiggle it around a bunch till i had a hole big enough to fit the end of a ball point pen ink thingie in there, then i'd push that in all the way. made a decent sized hole, and helped keep the weed in the cig.
as for putting in, i found that a pen ink thingie (can't think of what they are called) also can be used to push the weed into the empty cig real well. you can pack it in no problem.