So has anyone actually taken a look at any of the proc files, specifically /proc/overclock/mpu_opps? There's a setting in /proc/overclock/mpu_opps labeled as "vseld". It might make sense that these are the default voltage settings. If so, my mpu_opps file shows them as 62/58/48/33 for each profile top to bottom. It shows these values regardless of my current speed settings, so I'd imagine they're the default voltages for 1000/800/600/300, respectively.
If these are indeed the default stock voltages, they may be a reason why some people are having problems when trying to overclock. The scripts included with the package from the original post show lower default voltages.
Is there anyone a bit more knowledgeable on the matter that might be able to tell if I'm right or wrong?