Once a wah leaves it's rocker pedal design behind it becomes a totally different animal, a tone machine, literally. The controls can be made much more extreme, and the tonal possibilities become almost endless.
Many great players have used a wah in a fixed position to get tonal colorations.
You may be amazed at the tones you can get out of a fixed wah from MaxxPlay. First of all, here we believe it has to actually be a wah circuit. Some builders try using filters, EQ, etc, etc,... to my taste without an inductor you just don't have a wah tone.