Thanks for that info, good to know finally.
KMI should make that info available to users or potential buyers of the softstep.
Here is a list of pedals and pot values:
Bespeco VM18L - 20k
Boss FV-500 - 10k linear (expression pot)
Boss EV-5 - 10k linear
Boss EV-7 - 10k linear ("extra range" pot adds up to 50k ohms)
Boss FV-50L - 50k linear
Ernie Ball VP jr. (active) - 25k log
Ernie Ball VP jr. (passive) - 250k log
Korg EXP-2 - 50k linear
Kurzweil CC-1 - 20k linear
Line6 EX-1 - 10k linear
Mission EP-L6 - 10k linear
Moog EP-2 - 50k linear (reducable)
M-Audio EX-P - 10k linear
Pigtronix EP-1 - 20k
Proel Volume Pedal - 100k linear
Roland RV-5 - 10k linear
TC Electronic X1 - 25k log
Yamaha ep-1 20k
Schaller f 121 volume pedal 100k
QUIKLOK VP26U is Switchable 10K or 50K
Mission Engineering Inc EP-1 Expression Pedal 10k
Also, just saw this - sorry, it is slightly OT but looks good if you want to have more exp pedals than one.
Looks ace.
http://www.audiofront.net/MIDIExpression.php