gistfile1.txt

Addressing each question individually,

What I think: 

It's a fantastic fit for small applications and large applications in
some very specific use cases. That being said, I know the persistence
layer you use (disk, dynamo db, sql) has some effect on the performance 
so you could tune it to the use case.

Being able to execute queries that are built out of clojure data structures
is pretty fun. I've not yet used any of the nifty features and cannot speak 
to them

Is it stable?: 

Well, that depends - I've no experience running it on dynamo db or out in
the cloud (IMO, typical use case) but rather as the data store for a desktop
application. In this particular use case the transactor has to be restarted
whenever the laptop goes to sleep. Outside of that I've had no issues.

For what it's worth I've heard nothing but good things from those I know of 
who use it in production (@amitrathore, @annaisystems)