Swapping Macro Sets Based On Summon

I'm looking to have my SMN automatically swap macro sets based on which summon I bring out. SMN already goes back to a base macro set when I release a summon. I'd like it to go the other way around. To paint a picture:

I have all my summons on Macro Set 1. When I select one to summon (say Siren), I want to automatically switch to Macro Set 2, where all of the specific commands for Siren reside.

Can anyone provide me with a lua or a vanilla line to do this?

/macro set #
/macro book #

If Ifrit is on macro set 1

CRTL 1
/ma "Siren" <me>
/macro set 2

CTRL 1
/ma "Ifrit" <me>
/macro set 1

That's the vanilla code, someone else could provide the lua.

Dude, thanks.