I use to have a business as a Professional Pooper Scooper. I used a homemade device very similar to this for my duties. (I am trying to resist the temptation to make bad puns here) This product is easy to use, makes disposal easy, lightweight and most importantly can be used one handed. how many times have you seen a person with the dog leash in one hand, maybe a book or something as well and trying to use one of those rake and basket type scoopers. Not a pretty sight.
Take a professional pooper scooper's opinion on this one. Use it.

Bonnie D. - Calgary