my not-so-special textile equipment didn't show any damage in a highside on gravel/asphalt mix at about 45 mls lately (cage cutting me in a right hand corner).
Broke my collarbone, though.
I'm now wearing my armoured mesh jacket under my textiles, as it does fit quite well.
And while my jacket does hold its protectors quite well, the mesh jacket, which I bought for the hot summers here, does really keep them in place and has more of them
see end of page 1 for the face plant
edith : some of the cheaper pants come with knee protectors, but only empty pockets for the hip protectors - better fill them up immidiately.
When as a beginner I lowsided with max. 15 mls on gravel, the hip hurt 3 weeks. I quickly bought protectors afterwards.