Final Fantasy Hacktics

Quick question: Can the patch be used on multiplayer (Melee, Rendezvous)? Either if I'm the only one who has it or both me and my partner have it? My friend has an spanish patch for the game, can the patch be used on the .iso if it already has the translation patch, or will it overwrite it?

And by the way, tested the patch from the original post on my PSP 3000 with 6.60 PRO-C, and no problems so far, works as advertised.