I put the same Rain-X wipers on my GX in January and they've been great in hard Texas rain, snow in Colorado, and everything else thrown at them. I've been using Bosch wipers for 15+ years, but decided to try Rain-X this time because they were a few dollars cheaper per blade.
My only observation has been that they are very noisy and grippy if there isn't enough water on the windshield (still need wipers, but just not heavy rain if you know what I mean), which is something I never experienced with Bosch. I think maybe because the Rain-X blades are stickier? My first thought was that might lead to decreased life because they drag hard over the glass in those scenarios, but who knows.