NO, NO, NO, NO, NO, DON'T DO IT...  My boys were crying for at least 2 years post-snip.  Yeah, you will likely be fine and back at the crag in no time.  OR, join the 10% club of elites.  Designated to much pain and suffering in the worst of all places to be suffered.  TRUST ME, JUST SAY NO.  It's not worth the risk.  
That said, Billcoe has a very good point, so long as yer boys are up to the challenge...