you can follow us at Ever Devs for future updates to this and everhack itself.Guild Wars 2 under normal circumstances will not allow you to launch more then one client on the same machine. I can't really imagine multi-boxing being as popular with gw2 as it is with titles such as WoW or SWTOR. This loader does not require you to make multiple copies of your clients resource files, so run as many as you please from the same directory.
Only requirement is that you must launch gwLoader from your Guild Wars 2 root directory.
Filebeam - Beam up that File Scottie!