Leon - 9 is RABIC. I found this Listener quite easy. Shame there were only 16 clues! I feel short changed. Get back if you need help with the end game.
Any help appreciated with 11 and 12.
I have TUNNY for 12 but not convinced.
No idea for 11 except it starts with S to V?
I assume 14 is VISAS ie IS in VAS?
Thanks unclued. Seems a bit odd though - you'd expect a "switch" to be one for one, not one for two; and the clue works better without the first word. But I suppose it's needed for the theme.