German Volume Training certainly makes this concept seem plausible but even more so is the increasing number of chick lifters building incredible leg mass using only 135# on multiple sets of front squats and Romanian deadlifts. One last thing that comes to mind is Wendler's 531 "boring but big" accessory work: 5x10 @50% 1RM "just to get the volume in" , shit works and works well. So yeah, I can see how this could work , at least for a good long while.