I do this all the time ..... I take cuts and stick them in a plastic water bottle full of hose water. The narrow mouth on the water bottle holds the cuts from falling through. Set them on the shadier side of the green house and 7to10 days later I have nice roots ready for planting. Or just sexing the tops so I know what I have going in the green houses.
So yes, water cloning works great for me.
GL