Is it possible to install two copies at once?

I just installed Arthurian:Total War and it's really well done and I love it an all that, but I also quite like the vanilla BI... it is possible to have both on a system at the same time? Sort of the way Corier Invasion works?

Hi adembroski,
Good news, it is possible. All you need is the amazing mod switcher tool and away you go. Good luck and cheers!

thank you, much appreciated.

There are some mods that don´t support the modswitch, however.
In that case, just copy the whole RTW folder, and there you go, two independent installations. Of course it makes sense to copy an unmodded copy of RTW, since overwriting one mod with another tends to lead to trouble.