Yes, that method has been around for quite awhile - as has the rope-wick concept. The double-glove method is fine for some situations. But, the extended reach of a pole-mounted wick is invaluable when targeted plants are surrounded by desirables - expecially in soggy-mud areas where one's ability to walk, balance and hold a solution-bucket are challenged.
I've been known to use a Q-tip to treat individual sedge-weeds in my flowerbed - since pulling them up usually prompts two or three plants to take their place.
