I have used this for 2 years. It is very effective in narrow spaces such as IDF (Intermediate Distribution Frame) closets, where I have to add switches or UPS units to rack units. The wand shape makes using this screw driver very effective since it gives me the additional length from the chuck to the screw that a normal electric drill configuration fails to achieve.
I wish it also had a LED illumination adjacent to the chuck, which Dewalt is adding to its newer electric product line. -- Stephen S. Wizowski