By all means use the EZ swing club if you have physical hand eye coordination problems. Although the club has poor precision you can gain accuracy by applying less power. You'll hit the ball a lot straighter, but, of course, not as far. Try using longer clubs than you need an hit with about 75-80% power and you will see what I mean.
Other than that, I don't see the benefit of this club. Why teach new players a meter that is counter intuitive to any other clubs you will be use in the future. Stick to the two click meter and learn the game that way and you won't need to reinvent the wheel later.
Joey
EDIT: The EZ putter is terrible...even hard to make short putts with it. What say you WGT...maybe it's time for a new EZ Swing with some precision. There are probably lots of players out there that can not play this game without EZ so make the game fun for them as well.