Discussion about proposal for multilingual Wikibooks

I am cleaning Requests for new languages [1] at Meta. Some of the
requests are clearly out of the Language committee scope, and they
need wider discussion for concluding them.

One of such requests is for multilingual Wikibooks [2]. Please,
discuss here (at foundation-l; I am sending this message to textbook-l
to poke those who are not at foundation-l) or on wiki at the page [2].

[1] - http://meta.wikimedia.org/wiki/Requests_for_new_languages
[2] - http://meta.wikimedia.org/wiki/Requests_for_new_languages/Wikibooks_Multilingual