FWIW camelbak took FOREVER to get their podium bottles to market when they first introduced them. My rep told me it was because they are very picky about the formulation used to make them, and they kept sending the samples back for tweaks. So I would feel very comfortable using them.
I also LOVE the tops. I run with a bottle cradled in my arm and love that I no longer have water or sports drink dripping down my arm as I run.