I am not sure which Beck unit you are referring to,b the zapper, the mag pulser, or the Colloidal Silver maker? I have used all three of those and none come close to the dramatic effects I have with medical grade ozone. in fact the zapper never did anything for me at all. The magnetic pulser is good, and I use it, but it does nothing for the brain fog. And of course Beck does recommend drinking ozone water.
as for whether or not oxidizing agents drive metals deeper into the tissue, you would have to ask the same about vitamin c, since vitamin C actually stimulates the production of hydrogen peroxide in the body.