I just breadboarded this sucker with a 1M Gain Pot and Bypass cap to a R/C to ground in a non-inverting TS-Type Clipping Amp, minus the clipping diodes. Wow! So much nicer than a simple IC for this type of circuit. I need to play with the gain range and filtering a bit, but this would make a great dirty/clean booster.
I'm gonna compare to the Boss BD-2 and OD-3 Schematics and come up with an FET version.