The aqua dapter will add a little weight and are expensive compared to a tap, BUT they are so much easier to use than a tap. Because with tap you either have it in your hand, mounted on the pole or have a holster on your hip, which means you will have a loop of hose to snag on things, or you leave it on the floor meaning you have to bend down and pick it up.
With the AD it's pull on pull off, you can have both hands free to hold the pole then just a quick pull to turn it on or off. Some pinch the hose to cut the was off instead of a tap, but I tried that and it's a real perlava.