Every IDPA match I have competed/attended has been run on a cold range. I agree with the idea for several reasons. But I think the most important is we get on average from 7 to 15 new shooters at each match. A majority of these have NEVER competed at any level. Texas is a land of wide open spaces and a large percentage of people learn to shoot "out on the back 40". Rigid safty rules are not something to which they have been exposed. After a few matchs, under controled conditions, they become very safe. But it does take a bit of training.
It is long been a principal of ours that one is no more armed because he has possession of a firearm than he is a musician because he owns a piano. There is no point in having a gun if you are not capable of using it skillfully. - Jeff Cooper