First -- thanks for the mention of Pedalhacker Electronics! Always good to hear about another source for "woo" components.
I understand the comment about effects pedals with wah inductors general, since it can be hard to hear what those inductors contribute to any particular sound unless you listen when the pot is being moved. I think the Zapper has the most pronouced inductor-ish sound from the ones I have built, but I have read that when Zappa was recording with the pedal that other folks would "fiddle" with the tone pot to vary the sounds. I also really like sounds using the 3 position swith on the Conqueror Fuzz (granted -- that may have as much to do with that switch being labeled "Yoko" as anything, since that has not stopped being funny for me yet.)