[Dovecot] Maildirquota

Hi,

I'd like to use dovecot+postfix (with Maildir) for several virtual email servers, but one requirement is quota support. I'm aware about the lack of maildirquota support in dovecot, and I found a patch in the "unofficial patches" section which is said to provide maildirquota support to dovecot. How stable is this patch?, is it usable with dovecot 1.0b2?. And, is there any plan to support maildirquota natively in the near future?, I'd like to replace courier-imap in my setup.

Thanks. Rodolfo.