Panthairsoft is your man for this - his feet's busier than his fingers, but it's a close call.
FWIW I had the SYB5 and expression pedal and I could get Dubstep wobbles out of it and they were pretty good. It's not the most flexible unit on the market, but it's pretty good for the money. It's worth picking one up in the 'for sale' forum, and if you don't like it, then you can always punt it back up for sale again - we're all GAS-hags and forever changing our setups in line with our whims and fancies.