Reply to Traktor Kontrol X1 swap deck control mapping?

Hi, long time reader, first time poster =)

I have an X1 I use with Traktor Scratch Pro 2.5.1 and I'd like to be able to swap its control of decks A+B or C+D on the fly. For example, hit a button on the X1 or a key on my keyboard and the X1 will change between controlling A+B and then C+D. Kind of like you can do on the S4. I looked through the Controller Manager options but couldn't find this anywhere. Does anybody have any ideas? Will it take a more involved hack to make this happen?

Thanks!

(I have an S4, but I'm spending more time doing "traditional DJ'ing" now with CDJs & sometimes Traktor Scratch so bringing the S4 to gigs and fitting into already cramped DJ booths is kind of cumbersome. I don't want to have to buy another X1 and carry two of them to gigs just to use the C+D decks occasionally.)