[Dovecot] Anyone using dovecot obox?

Just looking for some input from other users of the obox (object storage) backend from dovecot.fi.

• What challenges/problem were you trying to overcome/solve by using obox?
• What kind of architecture did you deploy using obox? (e.g. distributed object storage for performance, or distributed for availability, geographic distribution of email services, etc.)
• What complexities, single points of failure, documentation omissions can you highlight having deployed the obox storage architecture?
• Did the obox backend support your email services as well as you expected or more?
• How was your interaction with Doveoct.fi?

Thanks in advance.