Add-on that switches between find herbs and find minerals every 2 seconds.
Only useful if you have both professions and want to farm them both at the same time.
Ideally you would scan for both at the same time, but wow won't let you do that so this is as good as it gets.
If anyone experiences "missing" nodes please let me know, I haven't done so myself but would like to hear about it if someone has.

Use:
/multitrack
/mult
Toggles the switching on and off, also accepts start/stop as parameters.

/multitrack int
/mult int
Brings up a dialogbox enabling you to change the switching interval.

What it does atm:
Checks if you have both skills before it starts.
Stops switching when you enter combat or cast a spell (pick a herb or mine a ore etc.)

Bugs:
Sometimes you might get a error message onscreen saying that "you can't do that right now" or "another action in progress" etc, nothing game-breaking.