I had GIVI bars on my DL650. They vibrated (the joint in front) so badly around 5,000 rpm that it even confused mechanics. I now have SW Motec and couldn't be happier. I think GIVI makes good bags, but their other hardware is so-so.
If their design is superior, but hardware isn't. OP might be able to purchase replacement hardware and some rubber isolators / washers and solve that issue.