AETHERPHON, global theremin family

I'm just about to order a theramin, I really want to try it. Most have 
a mono line level out. I want to try running it into a guitar multi FX 
pedal once I play it some. Anyone ever done this, and with no fried 
circuits in the FX unit? Years ago I used to run the mono output of an 
Oberheim Matrix1000 rack synth into a RAT distortion box. I kept the 
volume on the oberheim low and all that happened was that it got 
distortion. Any feedback on mic level FX used with theramin outputs is 
appreciated. What have players tried? Delay? Distortion? How did it 
sound?
Jim