...any update on this subject??
The Madstad brackets work great. I've had the MRA Vario shield for roughly 4 years now & have been very pleased with it. Earlier in the summer for whatever reason I decided to try the brackets. Nothing to lose since they have a 60 day money back guarantee.
You get a ton of smooth, clean, quiet air & no buffeting. The wife says it makes a huge difference from the pillion seat also. After roughly 8,000 miles or so I'm very pleased with them.
I did take them off a couple weeks ago for winter riding, simply to much cold air. They will go back on as soon as spring arrives.
No regrets!