I evaluated it for a project last year, but decided not to use it. One reason was that at the time, the project seemed to have been abandoned; the author did not respond to issues or pull requests. Another was that based on Google searches, there seemed to be no one else actually using it in production; so even considering getting the commercial ACID support seemed like a big gamble, never mind that I couldn't find any info on how it performed in large clusters, and so on.
That said, it seemed technically brilliant, and fast.
If Escriva can accomplish the same thing with Consus, in a fully open source way, and gain traction enough to keep the project alive, I could see this as something I would consider using. That said, I'm wary of anyone who just abandons projects like that, without telling anyone about it.