For who uses pen tablet (such as WACOM) it would be nice to be able to draw gestures holging down both Left and Right buttons at a time.
(On a pen tablet Left button is often the "sting" of the pen and the Right button is often the button placed on the side...then when you do fast movement it's very useful to press both buttons to work without mistake of misunderstanding...Because when you press the side button during the pen doesn't touch the tablet you make little misunderstanding movements...ouch ! )
In my case I draw every day with Autocad and Sketchup using pan tablet and SENSIVA which understant "Left + Right button" gestures.
>>>> Really very very powerfull !!!
Thanks and Best Regards
Stephane.