Hi,
I have tried that driver but I'm not using it in production. I'm using a MongoDB driver which implements what I need: the very basic and nothing else.
The "unfinished driver" status is usually not a problem for consumer apps.
Advanced features are usually used for administration or analysis, from another client/GUI.
Features such as compression and encryption are not needed if your MySQL server runs on the same machine or in a trusted network.
In summary, if your app only needs select/update/delete/create/drop, it should work very well for you.
(Although, I don't know how optimized it is, when it comes to performance).
My 2 cts :P