I had it done recently as well. I had that and body fat done and the folks that did it were glad I did as if they just went by my fat/lean percentages I would have had to cut my calories a lot more. The metabolic rate showed that I have a higher rate than just the 'fat pod' would have indicated. Perhaps due to being a bit more fit than my large size portrays.

I want to redo the body fat pod thingy in a few months, but hadn't thought much about redoing the metabolic rate analysis.