I have wondered about army boots versus civilian hiking boots before and brought up the subject but with no good responses. However, steel toes never entered my mind.
The question I did have, though, was about the apparent opposite direction that army boots and hiking boots appear to be going. On the one hand, army boots (and I mean anybody's army boots) seem to be getting heavier and heavier, in spite of new materials being introduced into the designs. The lightest pair of boots I have at the moment is a pair of DMS ankle boots, purchased new. Remember all the complaints in the Falklands about how the DMS boots were too light?
Civilian hiking boots, on the other hand, have been getting lighter and lighter and, if present trends continue, will disappear completely within the next ten years. If you start with old fashioned mountaineering boots with lugged soles, then look around the shoe department the next time you are in your favorite (favourite) shop, you know what I mean. I used a mostly split leather and fabric pair of Adidas hiking shoes that are now pretty much falling apart for a long time but I think they may be slightly lighter than most people wear. I have used sandals for hiking, chiefly as an experiment--which I did not repeat, and they worked fairly well, at least on a warm day.
The funny thing is, soldiers probably walk on smoother paths than a civilian hiker out on the weekend. But who said anything has to be logical.