Without the drivers installed, the base behavior of the addon board is a little weird -- literally no way to turn off the pi without the drivers installed. Additionally, the mechanical support of the addon board is very poor. It feels like the control board might easily break, and there's limited support for the battery enclosure to be anchored to the pi. Overall, though, it gets the job done, given you provide some form of additional mechanical support for the addon around the pi it's attached to (ie: the LiFePO4 Pi case).
Previous review was for the LiFePO4 board itself, not for this enclosure. The enclosure is actually pretty awesome, though I do wish it was a little more snug around the pi and had adequate protection for the back end of the battery enclosure, but overall, quite good.