Quick Swipe Comping shortcut

Hello all!

I'm using Logic Express 9.1.1, mostly to edit my classical studio recordings. I am currently working on a 19-minute quartet.

There appears to be only one way to toggle Quick Swipe Comping: scroll all the way to the end of the piece and click on the button at the right-hand side of my comp. As you can imagine, this is tedious. Is there a shortcut I don't know about?

Thanks,
Kieren.