"Even chemists disagree about the exact nature of toning but laboratory analysis has been reported that strongly suggests that in toning with gold or Pt./Pd. silver is in fact converted to the more noble metals."
What? Silver is in fact converted to the more noble metals? I want the machine you own that converts silver into some other element. Sounds like a cash cow to me...
Perhaps what you mean is that the reactive silver compounds are combined with the metallic toning compounds to form less reactive compounds (i.e. alloys).
And while I appreciate the points of view of both Kerik and Sandy, I've found kallitypes, while quite lovely, afford me very little in monetary or time savings.