DotFIT Anybody have one?

So I see some of the trainers at the gym wearing them and not sure if they have them for free for them or if they like them but I am going to ask. Just wondering if anybody out here has used one and what you think of the program. I am a gadget guy so I know some of you will say just workout but the gadget people will tell me weather its junk or worth the expense.

Thanks,
Marcello