My fuel tank skid has taken on the most scuffs so far. That's in 3 off-roading sessions. As far as I know I haven't hit the front LCA's yet, but I have a really awesome spotter. Haven't hit the rear shock mounts yet either, but I do have some uninstalled skids for them. Looks like those skids will further reduce clearance, though.
When I got stuck it was also a clearance issue combined with tire issue and driver/spotter error. Slid into a deep rut on the trail, just didn't have the ground clearance to get myself out.