Coleus are one of the easiest plants to grow from cuttings. With a few simple steps and minor after-care, you can grow wonderful plants that will give you months of pleasure.
I didn't have good results with that technique. Maybe it's just me, but I think I had 100% success rooting in potting soil, 0 in water. Your mileage might vary.
I find the transition from water to soil doesn't have great results.. if any live .. I usually take new cuttings from those to start in soil .. so just easier to just start in soil for me