Jef said:

Ktom, I'd like to know your opinion as a TO: we have, in March, a tournament with Italian, French and Spanish guys, shall we use "play the version you have in your hand" ruling ?

Note that this "pick a language" stance as a TO is what I would do when there are cards printed in more than one language at an event. The "play what is in your hand" is what I would do if the event wasn't likely to see translation issues because everything is in the same language. The two "rulings" are not inconsistent - they address different issues.