I'm of the opposite opinion and love both hex and torq head screws. Far less likely to have a slip and mark something up. Case in point, I used a set on my 686 when working on the trigger, and despite having removed them multiple times to remove the side plate, they still look great. I wish S&W would use them on all their revolvers.
If your wrench fits loose, either someone has damaged the heads or the wrench end itself is damaged, which is fairly common. Just rounding off the sharp corners a little bit will result in the loose fit you are describing. The good news is you can either grind the end off or cut it off. Either way, make sure to keep it cool by dipping in water to avoid losing the temper in the steel or it will just round off again.