The Quantum Scale

Many of us fall victim to an obsessive relationship with the scale, while others understand that the resulting number isn't a definition. I've discussed this concept before, and I bring it up again in light
of the following product:

On one hand, I think the Quantum Scale is a great tool for people who are interested in dropping serious poundage as it puts the focus on weight gains and losses. But on the other hand, will it stop those same people from doing the math that determines their total weight? And at that point—is there a point? To use a typical scale is to figure out the last time/this time difference anyway, which then defines gains and losses. Follow?

Question: What is your opinion? Would you prefer this scale over one that gives your weight each and every time? Tell me why or why not.