Isn't it possible to use the monitor out of the Kemper (which is mono) for FOH and the main L-R out for your IEM, problem solved! 
Edit.. sorry, has already been said before here.. Wake up wimmetje 
Isn't it possible to use the monitor out of the Kemper (which is mono) for FOH and the main L-R out for your IEM, problem solved!
Edit.. sorry, has already been said before here.. Wake up wimmetje