Read the OP and try to uderstand it. The title should be clear enough, but since I spent soe time to write the tutorial ...
Anyway, the answer is below:
No with the file included. They are only for the CFW
Yes if you can modify on your own the GW launcher.DAT. I'm not able.
Sorry to have been so rude, only morning bad mood.
Anyway, modding the GW launcher.dat is hard work because you haf fistly to decrypt the code (easy), than you have to find what to patch (hard because it's not plaincode but mostly ROP) and then eliminate CRC checks that avoid modification on GW code.
And how do you plan to run the second GW emunand? This tutorial is only for Palantine CFW as second emunand.
He has stated several times that it's not for 2 gateway emunand, there is probably more than this, this was just from the last 2 pages, yeah the post you shared was poorly worded, what he mean was it doesn't have to be MT+cfw it could be GW+CFW, or NTR + CFW