I stupidly overloaded a top box and overbalanced at the end of a long day, when I had to stop suddenly coming out of a carpark somewhere in the Vosges region in France earlier this week. The bike is unscathed, apart from a slight scuff to the left-side hand guards (and so am I), but the D-shaped upper section of my Givi crashbar set was bent in about 3-5 cm. towards the top left fairing (i.e. the point of maximum mechanical leverage, given the choice of potential places for direct support), and now almost touches it. The engine-guard section, which is directly bracketed into the frame in 3 places, was unaffected. It saved the whole bike this time, but what is effectively a one-off result isn't good enough for a bike designed for off-road use, in my view. I thought the set would do better. The components seemed quite hefty when I fitted them.
Maybe Hepco and Becker, Holan or Touratech, et al., use stronger materials on their similar designs. And please bear in mind that the bars came down hard on solid tarmac, with the extra weight of me (78 kg.) and the heavy top box (maybe 35 kg.+ - yes, I know!) giving them an extra whack. I mean, that guy from Outback Motortek dropped his BMW riderless and unloaded on a gravel drive. But nonetheless, it looks like the verdict rests with SW Motech/Outback Motortek approach at the moment.