I'm using it (build from source), and it's really nice. Definitely rough around the edge with cut and paste problems and some weird control character glitches if TERM ends up set to the wrong thing (eg inside a gnu screen session). But overall a huge step forward from the old conhost.

Still quite experimental right now, but a really awesome project! A preview build is available through the windows store if you want to try out without playing with building from scratch.