Sounds like a product that was already in the work and the foot pedal was a last minute "Oh, wait, you want that too? The product is already developed. We will find a way to add it to the programming" A problem we had in 2010 and solved.

I figure that the AC frequency is of concern too. We've determined (as well as MIller apparently) that kind of AC frequency can do damage to units like this. Also I am pulling from the fact that at the shows they had the AC frequency locked down to a narrow range.