if you mean the portable once's. Yes i have one of them. Hanging a 10 liter waterbag with only one pair of hands is hard. Best to have another person with you. Beware when filling the bag, that dirty water on the outside will also follow gravity and if you have the hose loose in a cup/bucket/container that dirty water will conatiminate the clean water.

Great for fixed camps with more than 2 or 3 persons. To much hassle for one person.