I was curious about that too. I listen to her podcast and it seems like she is actually really quite selective about the products she promotes to make sure they are actually beneficial and doing what they say that will. I'm several months behind on the podcast though, so I'm not sure if she's talked about this particular product yet.
I'm a very big fan of hers. I watch BL and use a few of her workout dvd's to workout with. I've heard she was involved in every little detail on making these products.....
I'm waiting for my husband to get paid and I'm going to try it out!