Looks great!

I have only started using this mouse. My hand does not fit the shape as well as my previous conventional mice and is sore after an hours use. I keep hitting the Click buttons to high.

The Click buttons also appear to have more resistance than previous mice. May be finger position and hence finger leverage is less.

IDEA: I went to send this comment without the arm rest/mouse pad ... My hand fits the mouse much better ... I believe with practice this mouse will work just fine.