I too have it and agree with other comments. Easy to use and does improve articulation when disconnected while still driving fine. I also agree that other upgrades such as tires make a larger improvement.
Owned a 2007 Sprinter poptop and now a self-converted 2016 170" 4x4 with aluminum/HDPE cabinets, hot water, air compressors, electrically raising bed, bike garage, rotating bench, custom rack, suspension, skid plates, lights & more. Build out videos at www.vantripping.com and https://www.youtube.com/c/KCMares.