[Dovecot] keeping 2 dovcots in sync?

I would like to have one master dovecot instance that gets email, and a slave dovecot on my laptop.

I use maildir, and I was thinking of doing this with unison, but I suppose dovecots indexes would go out of sync whenever I used unison.

There seems to be a number of imap folder synchronizers, but I have heard they are troublesome.

Any hints?

Joakim Verona