I have a pair of these. Used to wear them when I was riding sport bikes in the canyons of SoCal.
Before I got these pants, I had a get off at 35-40 mph one day. I had on armored leather jacket, FF helmet, armored gloves and a good pair of riding boots. no riding pants, just jeans. The bike was ok, just bent foot peg, brake, lever and scraped bodywork. The jacket ripped up, but my arms and upper body unscathed. Big gashes in the face guard of the helmet, but face and head ok. scraped up left boot, but foot and ankle ok. palms of the gloves all scratched to pieces, but my grabbers were fine....However, my lower body took it without any more protection than jeans. I had bad scrapes and bruising on my left hip and a banged up left knee cap, from not having armor on the lower body. Interestingly, the jeans scraped up but did not tear. I still got the road rash even-tough the jeans did not tear, because my skin scraped against the rough inner surface of the denim. The bruises due to not having padding to cushion the hard impact of my hip bone and knee cap against the ground.
...After that spill, I bought these very pants. I wanted protection, but did not want to look like ultra-man in a full race suit. If I was going to incorporate social activities into the ride itinerary, I did not want to be at a bar or BBQ/pool party with some dorky riding pants. So I bought a pair of these very under armor pants. I used the hip and knee armor, but did not bother with the tail bone pad cause it felt funny sitting on it (and made me look like I had poo poo'ed in my pants). They work well considering what they are. Not as good as dedicated riding pants, but well enough. Not going to necessarily prevent broken bones, but will lessen the consequences of a fall in as much as bruising and road rash are concerned. Not too bad in the summer heat here in SoCal but we have dry heat here...Don't know how they fair in humid conditions.