Yeh, I've seen/heard the stories, plus there's that semi-amusing (shouldn't say it, but he slaps his arm like a mosquito bit him or something - unintentional comedy factor etc.) link you posted in my log after my broken rib.
19 clustered leg press; 1 - 160kg, 1 - 200kg, 2 - 240kg (warm ups); 4 - 280kg, 3,3 - 320kg, 3,3 - 340kg, 3 - 350kg. PR on the reps at 350kg. Going deep on all reps. 0 partials.
These are really paying off when it comes to deadlifts. I'm getting a lot of involvement from all relevant lower body in each of those, no activation issues, no strength let downs etc. This particular piece of equipment has a wonderful groove to it for my body proportions, hits glutes, hamstrings and quads all very well (at the relevant places during the rep) and I can adjust foot position to impact that/adjust relative vector etc.