Yes, Feb 27, 2016: it's horrible. I don't even know where to begin. There is no delete key or gesture. The eraser tool is not a tool, it's a button that you use after using a select-with-handles tool.
The programmers don't understand the difference between a tool, a button, an icon or a menu and put them all next to each other in a palette.
Want to draw a marquis around a set of notes? Nope. Go into chord mode and want to add notes to a chord, nope. Half the time it will create new notes even if you are directly above or below the existing chord. Want to click and drag a note left or right? Nope only right or left.
The program gets confused a lot and you have to change tools, switch modes and then try again.
Absolutely horrible disaster.