Yamaha CS80

Anyone using the original foot controller/pedals with their CS80?

I didn't get any pedals with my CS80 and I'm generally a bit wary of plugging things in to 
her as she currently works like a dream and I'd hate to risk changing that. However, I did 
find that a Yamaha sustain pedal from a PF200 piano works fine as a sustain 
and portamento pedal.

Just wondering whether it's worth trying a pedal in the other foot controller socket. Can 
anyone who uses one tell me if it's a worthwhile experience? I presume it can open the 
filter but anything else? I've never understood what the Exp & Exp Wah switches were for 
and I'm presuming they have different effects when using the foot controller?

If anyone also has experience of which (if any) non-original pedals work with this then I'd 
be grateful for the info. Better still, anyone who does use one, fancy posting an mp3 up on 
site?

While on the subject of plugging things in - anyone brave enough to try plugging into the 
Ext socket? Good results?

Cheers 

Si