Ok, I'm gonna weigh back in on this one, simply because I have personal experience with this.
3 Years ago, I was taking a land navigation class taught at the local college. While taking the final, a boulder broke out from under me as I stepped off a rock face to a lower boulder... to make a long story short, my foot and leg were crushed by an estimated 700 pound boulder. I was wearing a pair of Columbia hiking boots at the time. They had a semi-rigid sole, a hard plastic toe cap and a hard plastic heel cup. My tibia and fibula (shin and smaller bone located on outside of ankle up to the knee) were both crushed lengthwise; that is to say, I had 1" gaps in my shin from the missing bone and what was left of the bone was mere shards. Several of the tarsals and metatarsals in my foot were crushed, lengthwise. Fortunately for me, the wide, tough sole of my boot and the stiff heel cup kept my leg from being pressed too far into a crevice, thereby saving my ankle bones from being sheared off or crushed. From that experience, I learned several things:
1) good boots, when in the wilderness, are a must. Prior to taking the land nav class (which was preceded by a wilderness survival course), I hiked and backpacked in Adidas running shoes. After taking the classes and getting my leg crushed, I now realize the extreme wisdom of wearing good boots in the wilds.
2) there is no single boot that can fit every role we need boots for. My summertime needs are different from my wintertime needs. In winter, I need much more insulation. In summer, I need support without unnecessary insulation.
If the boulder that crushed me had weighed 2,000lbs+, I probably wouldn't have been able to avoid it crushing my torso... I probably wouldn't be here, now. The 700 pounder that got me would've killed me, had I not been able to get my head, neck, and torso out of its path. Add 1,000+lbs and, even if it did "only" get my leg, it would've ripped my leg off my body.
All this happened to me 3 years ago (in May, in fact) and my shin still hasn't fully filled in. 3 years of brokenness is not fun. On the plus side, I am almost completely healed in the bones and, after a surgery to remove massive amounts of scar tissue, thereby restoring much-needed range-of-motion, I should be back to nearly normal... my leg is about 1/2" shorter than it used to be and it bows outward between the knee and ankle, and I've got a steel plate and some awesome scars (people can't help but staring

) and I can tell when the weather's about to change, but... I'm alive. I can walk. I have my own leg. It's been a loooonng road, but I'm nearing the end. And now, I have much more insight into a lot of things, one of them being the need for basic survival tools and safety precautions in life. Things like wearing good boots and having a good knife with you wherever you go.
Oh yeah, the class was taught by a group of retired Air Force pararescuemen, 2 with silver star awards from Viet Nam. When the crush occurred, I had an instructor with me. He was able to quickly locate the lead instructor and, between the two of them, they did a traction job on my leg tha, according to the surgeon in the hospital, saved my leg from amputation. Thank God for miracles such as that!
Ok, that's my story... wear good boots
