Footswitch for Spectrasonics software

I am looking for a way to switch sounds and articulations in both Omnisphere and Trilian. Does anyone know any footswitch that would be a perfect match for those programs? Maybe someone knows what kind of pedals or switches Eric Persing uses when he demoes Trilian to George Duke and Greg Phillinganes?

Now that looks like a solid solution! Thank you for the reply!
I'll have a look at their page.
Do you know if there would be an issue installing two pedals?

Now That's cool too. But what I need is one that goes directly to midi devices like my Lexicon reverb to change patches. So I guess an old school Midi foot controller. 
That swicth would work if you have your audio interface that has midi ports hooked up. 
 
Oystein, Go to the p i Engineering web site  http://xkeys.com/
and they have all the documentation.  I'm certain that each pedal can be programmed individually and assignments are stored in the pedal now. Under XP this was not so.  I see they now support Android so the company is progressive. 
If you need more than 3 switches they also make these too. Looks like with this device you could make your own switchboard out of any contact switch.  
http://xkeys.com/xkeys/xkswi.php
 

Any switch can trigger an action from your computer. Connect up to 12
switches to the X-keys USB 12 Switch Interface and program each switch
with a function. Any keyboard shortcut your software uses can have a
designated switch (copy, paste, save, open, close). Switches are easily set
up to launch applications, open files, or type short lines of text like names,
addresses, and account numbers. Switches are connected via Assistive
Technology standard 3.5mm (1/8”) phone plugs.