BrushTools: Pressure Sensitivity (Stylus)

Since I recently discovered the brush tools inside NVil, I thought, let's see if the weight is pressure sensitive to a stylus (in my case Wacom Bamboo Pen&Touch). But it seems that's not the case. For a future release that would be a nice addition.

I just got the intuous 5 a couple of months ago.
Pressure sensitivity would be great.