Primary Supports

Hello Everyone,
    I am in the stage of setting up my primary.  I want to use 2" PVC  for the 
supports because I have some extra that needs to be used up.  I have seen many 
people who have cut notches in the PVC, but not really anyone who has drilled 
holes for the copper tubing.  I was wondering if there would be any problems 
with this other than making it harder to build?  Thanks for the help!!

     Bryan Miller