Ok: trick question

I want to participate in BtSH.

But they use EB1.1
I've got EB1.2 installed


Is it possible to c/p my entire RTW folder (with EB1.2 in it), delete the eb folder in the copied version, and there reinstall EB1.1?
Resulting in 2 RTW folders, one with EB1.1 and one with EB1.2?