Has anyone ever tested CDGC (Concurrent D GC)?

[Trass3r]

I have just come to know that there is an experimental branch in druntime  
with a concurrent GC:  
https://github.com/D-Programming-Language/druntime/tree/CDGC
I really wonder why this wasn't announced here so people actually try it  
out, find bugs etc.

Has anyone tried it yet?