TBH I set mine all up and its hashing away nicely, (one unit has gone down but a un-plug , plug back in sorted that) I only notice the reboot once I look at the logs, which seems to have 1-2 min downtime. Obviously its automatically re-joining the pool. I know loosing a minute or so every hour will add up, that's why I cannot wait till FW the update.

I know some of the lads are working on a rasp-pi version of the controller over on litecointalk may be of interest to you?