I’ve been using the Advan lowers on my RG for a couple of years and no complaints. I don’t get an updraft that I was feeling prior to getting them. I did take them off though when it hit 35C up here for about a week this past summer. Good time to scrape the bugs off of em.
I ordered mine when I bought the bike and had them installed before I took possession of the bike. I made SURE to get the quick detach kit so I could put them off and on quickly. Three plus years later...... they've never been off. Even in the Mojave desert.