I used my Canyon Cages twice. Once in the garage, there was a piece of magazine or flyer on the floor, I stepped on it moving the bike and it slid out from under me, down went the bike. No damage.
2nd time, we were in VA coming home from a 2 week trip down south. My wife rode her Vulcan 1500 off the side of a curve into a bed of kudzu. I turned around to find her when she didn't show up at the end of the twisties (we typically get separated and I'll pull over and wait for her to catch up). I back tracked, saw her on the side of the road, went to make a U-turn with a fully loaded top case and side cases, failed to take into consideration that I was making a U-turn on a hill, and the bike went down hard. The cages did their job, 2 scraps on the front and back cage and nothing on the bike touched.
The Vulcan didn't fare so well, it was totaled, but my wife was relatively ok. Spent the day and night in the hospital getting checked out but nothing more than bumps and bruises.