I think the Dual bass wah is like that. The switch only goes between two settings...normal wah and funk wah? I hate it when companies design newer pedals that are a PITA to use.
Maybe I'm not understanding you correctly, but the Morley Dual Bass Wah (PBA-2) is a switchless wah. Step on the treadle and the wah turns on, let go of the treadle and the wah turns off. If the Cliff Burton jobber functions in a similar way I will be happy. It it functions like the older Distortion Wah Volume pedals I will not be happy.