I just released IC-Switch 1.3b1 to a limited number of beta testers.
This version has been updated for Panther (which revealed a wrong assumption that was working by chance in Jaguar -- I wonder where Murphy was!). I also added an option to control whether each submenu is displayed or not, and the path of the selected helper is now visible in the prefs window.
Please email me if you'd like to beta test it (knowing that as any software at beta stage it might not work as expected or conflict with other applications).
Requirements: 10.2.x or newer.