The ROG Azabache use of clipping diodes in front of each Jfet works so well in that circuit in preventing the Jfet from hard clipping while at the same time allowing the signal to be sufficiently clipped. Here's the schematic:
http://www.runoffgroove.com/azabache.html
I am wondering if this approach could be applied to Mosfets as well. If I am building a multi-stage Mosfet overdrive, could I have the clipping diodes to ground precede the Mosfets in a manner similar to their position/function in the Azabache? or do Mosfets function in such a way that putting in these diodes would prove to be a detriment to the Mosfet's function?
As long as you put the diodes before the input capacitor, you should be fine. If you wanted to have them between MOSFET stages, you would need two capacitors on either side of the diodes. Other than that, there should be no reason not to