You might take note of where I installed mine. At the rate I'm going, I'll wear them out! This is my second slide and unfortunately I must say, that the upper rear mounting tube, the one that has an open end that is plugged with a plastic cap, sticks out just far enough to where if, as I have now done twice, if one slides the bike across a rough surface that end can snag on whatever it is passing over. In my case, I have had to remove the bent bar and tweak it back into alignment. More or less. The last time the bars bent enough to have my aux light just kiss my plastic enough to crack it. Nothing that JB Weld couldn't fix and is hardly noticeable. Now I am not bashing

GIVI. I like the bars and think they look good on the bike. But in my particular encounters with the deck they definitely snagged and pushed rearward enough to require tweaking back into shape. Maybe other brands would have fared better, maybe not. And if I had NO protection, my plastics would have been destroyed, so I guess they did their job. I have also had several tip-overs where the bars completely protected the bike and were fine. But the pucks are showing some character...
I always tell people the thing I like about the VX 300 is that WHEN the bike falls over I can upright it myself with reasonable effort. I just need to stop proving it!