Nice! I want them too. I’ve had the vents on my last 2 vehicles and miss being able to keep the windows open a crack on hot days with a chance of rain. I’ve also had mud flaps on 3 of my last 4 vehicles. They definitely help keep the lower trim clean.
I got some "points" from my dealer when I purchased my 2019 3LT last winter. I finally got around to spending them on a set of the splash guards. Easy to self-install. Took about an hour. I think it makes a significant improvement.