I glanced at the text on some of the sites --
it sounds similar to other products I've tried
or read about. Based on my experiences with
these products, I have no reason to believe
that this would not work.
Certainly, based on my past experiences, if
I had to make a choice between a pulsor or
shielding materials, I'd choose the pulsor!
(but as I said before, my success ratio with
such devices is about 1 in 10)