For the reason you just stated, every person running on carpet which has super high traction should have a slipper clutch. In fact those who run mod with 4.5 motors would most likely nuke their entire drive line frequently due to the power being transmitted and the amount of grip that's available.
Wheel spin releases energy, where as grip places stress on various parts of the transmission.
Yet none of them run a slipper clutch, nor do they run even metal gears in their diffs. Instead they tune for traction with various differential fluids.
My advice along with a few others is that it's not a necessary. It's just an added cost.
If it works for you then it works for you.