Is your son in the Boy Scouts or Cub Scouts? If he is in the Cubs, then I'd probably buy it knowing that he'll likely lose it or destroy it on the first outing anyway. Rather than a life-saving tool it becomes a cheap substitute for practice purposes.

If he is in the Boy Scouts, I'd suggest spending some money on quality gear (perhaps ritter PSK) and teach them how to use the tools properly. When I was a counselor at Scout Camp (good lord, it's been over 25 years ago <img src="/images/graemlins/blush.gif" alt="" />), I used to take the cheapo 5-in-one-tool and demonstrate how bad it was compared to real gear. Yes, the flint would break off, the compass was at least 60 degrees off, the mirror would fall out and the matches in the case would get soaked if it was held underwater. At the time, it was good for teenage comic relief. I imagine the 7-in-onetool is similarly bad.