I have the small version and the pen is pressure sensitive
With moi3d there is no problem when you draw freehand
Moving the cursor over my 19 inch screen is little more
difficult because you have to move it many times to select
the options.(a tabletpc or a wacom cintiq would be nicer)
The pen buttons are to small to handle
In Rhino i use it to draw on a surface and i hope this will
be possible in Moi3d in the future
A small program called Artrage2.0 came with it and is giving me
great fun