OT: Expression pedal Question

["Kevin Cheli-Colando" <kevin@minds-eye.org>]

I just got a Boss VF-1 and was looking at getting an expression pedal to
open the sound up even more.  In the manual however it says you must use
a Roland Ev5 or Boss FV300 or risk damage to the unit.  Now this seems
like an empty scare tactic to make you buy roland gear but is there any
possibility that you could harm a device with an improper expression pedal?

Thanks

Kevin

How amazing, how amazing!
Hard to comprehend that
Nonsentient beings expound Dharma.
It simply cannot be heard with the ear,
But when sound is heard with the eye,
Then it is understood.
- Tung-shan (807-869)

Sound and Vision:    http://www.minds-eye.org