Its good, and with some additional development it could be amazing. I just realized there is a version from July of this year; I have not used that yet so my comments are based on the version from late 2016.
It possible to guide the quad flow manually if desired, although the default settings work fairly well. There is a setting to preserve sharp edges which is a must for CAD meshes. Unfortunately there are consistently divits or chips missing from sharp edges. Although increasing the resolution helps this to some extent, it does not eliminate them.
I have found with finely detailed objects that its not possible to get the resolution high enough to reproduce the level of detail in the original object.
EDIT I did just test the latest version from July and it seems more stable with higher resolutions than the previous. There is still some chipping on hard edges, or edges where the radius is smaller than the target resolution. This is due to the flow not being precisely aligned to the edge. I think if I had more than 17Gb of RAM a higher resolution might give a useable result.