You'd probably have them point to a custom mapped key, on switches.
Rather than to JambaMaster or Follow/JambaMaster.

This custom mapped key, would not need a hotkey to activate.
Somthing like this...

One Step
- Do Mapped Key JambaMaster > Self
- Do Mapped Key Follow/JambaMaster > Self

You would want to go into the Control Keymap, and look at both of these mapped keys.
Go to advanced for either one of them, and check the box (under Advanced) for "This Mapped Key should start OFF (Disabled) when the Key Map is turned ON".
So one of them starts disabled, and the other starts enabled.

When you switch, the enabled behavior occurs.
And the disabled behavior does not.

Then you make a toggle mapped key.
Two actions per Step, and two Steps.
1. Keymap Actions > New Mapped Key State Action > Enables JambaMaster
1. Keymap Actions > New Mapped Key State Action > Disables Follow/JambaMaster
2. Keymap Actions > New Mapped Key State Action > Disables JambaMaster
2. Keymap Actions > New Mapped Key State Action > Enables Follow/JambaMaster

So you can push the toggle, and one of the mapped keys is enabled/turned on, and the other is turned off.
Depending on whether you want them to auto follow on a switch or not.