Greetings,
Some time ago I recorded a brief improv to show off the Auto-wah in the
Luxonix LFX-1310 VST plugin. I haven't tried Fons's software yet, but
for comparison here's what the Luxonix version sounds like:
http://linux-sound.org/audio/Improv2-Live.ogg
IIRC I left its settings at their default values.
Best,
dp