Is OpenSTT ready / working with MyCroft

Hey, I wanted to know a few things about MyCroft and the STT and the TTS engine it uses, so…

First off, the title question :wink:
What is the default STT / TTS engine.
Is it relatively easy to change the engines? And how would one go about doing that?
OpenSTT is big on privacy, but what about the current TTS?

You can check the default configuration here

Default configuration:
Afaik, they send over the data to their servers and decide which STT to use.

TTS is done using Mimic which is opensource and runs locally.

Check for instance this post for privacy concerns