Hell yeah! I was pushing @griff10672 to draw the prototype with two big stones and a little mushroom in the middle. I'd put that on my pedalboard right next to my Beez Nutz.
On the Whetstone, it's a master volume capable of getting some good boost. The depth and feedback knobs control the amount of wet signal and the volume knob allows you to adjust it to unity volume (and beyond). With subtle settings, you can turn it up and keep unity volume, and on crazy "lost in the sauce" syrup settings, you can turn down to tame it.