Armando,
Thanks for the cool post, always looking for a new way to root a cutting. Maybe even beat the dreaded fungus gnats out of a meal! Those damn things are a relentless battle for me this year.
I accidentally created a water root cutting last year. It was about a 2 inch diameter Celeste branch, about 24 inches long. I had tossed in a bucket with a about 12 inches of water to keep it from drying out, then kept putting off doing anything, other than adding water, for several weeks. This was out in full sun! Walla…… to my surprise, about a month later I noticed roots growing. I had heard water roots were difficult but, potted up anyway. It took and now growing like a weed.