Used my new Platypus Gravityworks filter over the weekend and it worked very nicely. Much easier than pumping and less moving parts to worry about breaking while on the trail. It filtered quickly and I didn't use the clean bag, just hung the dirty water and filtered straight to my water bladder. I won't carry the clean bag anymore unless I'm responsible for the clean water of a group trip in order to save weight. I highly recommend the product so far with my single use.
This review was written in the old system and had content requirements that are different than reviews written today.