Well, I can completely agree with that post, Ian, so I guess that's a start..!

A keyboard without a swell pedal is like a car with no accelerator or brake pedal, just on/off switches! Potentially, a disaster (mind you, down here in the South, looks like most people can't even make those work on ice!).

Not only are there other brands, but other brand's STYLES too, which you can find converted (or convert yourself). With work and patience, you can often lick them into acceptable shape, so if you are looking more more room to play (or less!) you aren't simply locked into your arranger's ROM styles...