I don't see a lot of reasons to do this. In general its a good idea,
but such thing will complicate the maintenance of documentations. I
often see (in the other products) that localized versions of docs are
outdated and prefer to read English docs instead.
More interesting is to find one who can proofread English
documentation (and correct my ugly English :)).
--
Best regards,
Alexei "SibProgrammer" Yuzhakov
Blog: http://blog.softunity.com.ru/