So, I did some successful tests and now I confirm that US TB patch works on Atelier Totori: The Adventurer of Arland EUR version (BLES01221). But replace the EBOOT.BIN file only and let multiMAN (or your favorite loader) patch the PARAM.SFO to 3.55.
Because the PARAM.SFO file delivered in the TB patch is the one from US version of the game with "BLUS30735" code and it may cause some issues with the rest of the EUR game files that have the "BLES01221" code.
Like the US version, the games runs internal, external and "discless".
Thanks for the file, dhemy.