I'm one who has. Installed Pingel 1" lowering blocks on my '00 EGC with the 3-3s, and wear thicker soled boots. Perhaps it's because I only weigh 139 (less than some of my passengers) that I haven't experienced any negatives, even two-up. Didn't measure before installing the blocks, but it feels like the Pingels only lowered it about 1/2", not the advertised 1". Anyone actually measure frame height before and after Pingels?