Calorie Counter Wearable or snake oil?!

[gg_got_a_tesla]

A controversial piece of wearable tech from CES 2015:

BBC News - CES 2015: GoBe calorie counter wearable put to the test

There's a Tesla reference in there

 

[dhanson865]

A controversial piece of wearable tech from CES 2015:

BBC News - CES 2015: GoBe calorie counter wearable put to the test

There's a Tesla reference in there

OK assuming it works for counting calories will I be able to wear it without getting a rash? (Google "fitbit rash" if you haven't seen stories about fitbit).